SOL6736 - OpenSSH vulnerabilities CAN-2006-5051, CAN-2006-4924

This security advisory describes an OpenSSH Signal Handling vulnerability CVE-2006-5051. A remote attacker could possibly leverage this flaw to cause a denial of service. This security advisory also describes a denial of service bug CVE-2006-4924 in the OpenSSH sshd server. A remote attacker can...

OpenSSH < 4.1.0p2 / 4.2 Timing Attack

Binary data 3787.prm...

OpenSSH timing attacks

It's possible to check user's validity by measuring response time...

yet another OpenSSH timing leak?

Hello Bugtraq, Here we are again... During a recent penetration test i stumbled upon yet another OpenSSH timing leak, leading to remote disclosure of valid usernames. It's not as big as the one i found in the past CVE-2003-0190, but it can indeed be exploited over the Internet, nevertheless. This...

openssh43p1DoS.txt

!/bin/bash OpenSSH CRC compensation attack detection DoS PoC. Tavis Ormandy Yes, I really did implement crc-32 in bash. usage: script victim hostname hostname=$1:-localhost port=$2:-22 where the fifo is created to communicate with netcat fifo=/tmp/nc.$$ make the fifos mkfifo $fifo.in mkfifo...

[SECURITY] [DSA 1189-1] New openssh-krb5 packages fix denial of service and potential execution of arbitrary code

-------------------------------------------------------------------------- Debian Security Advisory DSA 1189-1 [email protected] http://www.debian.org/security/ Moritz Muehlenhoff October 4th, 2006 http://www.debian.org/security/faq -...

DSA-1189-1 openssh-krb5

Bulletin has no description...

OpenSSH fails to properly handle multiple identical blocks in a SSH packet

Overview OpenSSH fails to properly handle multiple identical blocks in a SSH packet. This vulnerability may cause a denial-of-service condition. Description OpenSSH is an open source client and server implementation of the Secure Shell SSH protocol. OpenSSH includes a cyclic redundancy check CRC...

OpenSSH contains a race condition vulnerability

Overview A race condition vulnerability exists in the OpenSSH daemon. Successful exploitation of this vulnerability may result in a denial-of-service condition. Description OpenSSH is an open source client and server implementation of the Secure Shell SSH protocol.The OpenSSH server includes the...

openssh security update

CentOS Errata and Security Advisory CESA-2006:0698-01 Updated openssh packages that fix several security issues in sshd are now available for Red Hat Enterprise Linux 2.1. This update has been rated as having important security impact by the Red Hat Security Response Team. OpenSSH is OpenBSD's SS...

FreeBSD : openssh -- multiple vulnerabilities (32db37a5-50c3-11db-acf3-000c6ec775d9)

Problem Description The CRC compensation attack detector in the sshd8 daemon, upon receipt of duplicate blocks, uses CPU time cubic in the number of duplicate blocks received. CVE-2006-4924 A race condition exists in a signal handler used by the sshd8 daemon to handle the LoginGraceTime option,...

CentOS 3 / 4 : openssh / openssl (CESA-2006:0697)

Updated openssh packages that fix two security flaws are now available for Red Hat Enterprise Linux 3 and 4. This update has been rated as having important security impact by the Red Hat Security Response Team. OpenSSH is OpenBSD's SSH Secure SHell protocol implementation. This package includes t...

FreeBSD-SA-06:22.openssh

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-06:22.openssh Security Advisory The FreeBSD Project Topic: Multiple vulnerabilities in OpenSSH Category: contrib Module: openssh Announced: 2006-09-30 Credits:...

[slackware-security] openssh

New openssh packages are available for Slackware 8.1, 9.0, 9.1, 10.0, 10.1, 10.2, and -current to fix security issues. More details about these issues may be found in the Common Vulnerabilities and Exposures CVE database: https://vulners.com/cve/CVE-2006-4924 https://vulners.com/cve/CVE-2006-5051...

openssh, openssl, openssl096b security update

CentOS Errata and Security Advisory CESA-2006:0697 Updated openssh packages that fix two security flaws are now available for Red Hat Enterprise Linux 3 and 4. This update has been rated as having important security impact by the Red Hat Security Response Team. OpenSSH is OpenBSD's SSH Secure SHe...

security flaw

OpenSSH 3.6.1 and earlier, when restricting host access by numeric IP addresses and with VerifyReverseMapping disabled, allows remote attackers to bypass "from=" and "user@host" address restrictions by connecting to a host from a system whose reverse DNS hostname contains the numeric IP address...

Important: Red Hat Security Advisory: openssh security update

Updated openssh packages that fix several security issues in sshd are now available for Red Hat Enterprise Linux 2.1. This update has been rated as having important security impact by the Red Hat Security Response Team. OpenSSH is OpenBSD's SSH Secure SHell protocol implementation. This package...

openssh DoS

sshd in OpenSSH before 4.4, when using the version 1 SSH protocol, allows remote attackers to cause a denial of service CPU consumption via an SSH packet that contains duplicate blocks, which is not properly handled by the CRC compensation attack detector...

openssh DoS

sshd in OpenSSH before 4.4, when using the version 1 SSH protocol, allows remote attackers to cause a denial of service CPU consumption via an SSH packet that contains duplicate blocks, which is not properly handled by the CRC compensation attack detector...

unsafe GSSAPI signal handler

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service crash, and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free...