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CVE-2006-4924

Status Candidate

Overview

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.

Related Files

SCOSA-2008.2.txt
Posted Mar 13, 2008
Authored by SCO | Site sco.com

SCO Security Advisory SCOSA-2008.2 - sshd in OpenSSH versions before 4.4, when using the version 1 SSH protocol, could allow a remote attacker to cause a denial of service. It certainly is nice to have SCO bring this to light for their consumers two years after the fact.

tags | advisory, remote, denial of service, protocol
advisories | CVE-2006-4924
SHA-256 | 7b85b6b25922a9638680df7e8c6550ec8639cf624979b1d840ed176611234312
HP Security Bulletin 2006-12.67
Posted Dec 6, 2006
Authored by Hewlett Packard | Site hp.com

HP Security Bulletin - A potential security vulnerability has been identified with HP-UX running HP-UX Secure Shell. The vulnerability could be remotely exploited to allow a remote unauthorized user to create a denial of service.

tags | advisory, remote, denial of service, shell
systems | hpux
advisories | CVE-2006-0225, CVE-2006-4924
SHA-256 | a63c3adb81a7a6e1cbb3e069c7b5ae7ff1aa4ff929852b66154ad2e582fa94bd
Debian Linux Security Advisory 1212-1
Posted Nov 16, 2006
Authored by Debian | Site debian.org

Debian Security Advisory 1212-1 - Two denial of service vulnerabilities have been found in the OpenSSH server. The sshd support for ssh protocol version 1 does not properly handle duplicate incoming blocks. This could allow a remote attacker to cause sshd to consume significant CPU resources leading to a denial of service. A signal handler race condition could potentially allow a remote attacker to crash sshd and could theoretically lead to the ability to execute arbitrary code.

tags | advisory, remote, denial of service, arbitrary, vulnerability, protocol
systems | linux, debian
advisories | CVE-2006-4924, CVE-2006-5051
SHA-256 | d055d29f8a677bdf5ebce0328815231b0d4096388f3230b3d97eaa2ca84bea58
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