1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200609-17 / openssh |
| Release Date | September 27, 2006 |
| Latest Revision | September 27, 2006: 02 |
| Impact | normal |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| net-misc/openssh | < 4.3_p2-r5 | >= 4.3_p2-r5 | All supported architectures |
Related bugreports: #148228
A flaw in the OpenSSH daemon allows remote unauthenticated attackers to cause a Denial of Service.
OpenSSH is a free suite of applications for the SSH protocol, developed and maintained by the OpenBSD project.
Tavis Ormandy of the Google Security Team discovered a Denial of Service vulnerability in the SSH protocol version 1 CRC compensation attack detector.
A remote unauthenticated attacker may be able to trigger excessive CPU usage by sending a pathological SSH message, denying service to other legitimate users or processes.
The system administrator may disable SSH protocol version 1 in /etc/ssh/sshd_config.
All OpenSSH users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/openssh-4.3_p2-r5" |