IT News
USN-649-1: OpenSSH vulnerabilitiesReferenced CVEs:
CVE-2008-1657, CVE-2008-4109
Description:
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Ubuntu Security Notice USN-649-1 October 01, 2008
openssh vulnerabilities
CVE-2008-1657, CVE-2008-4109
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A security issue affects the following Ubuntu releases:
Ubuntu 6.06 LTS
Ubuntu 7.04
Ubuntu 7.10
This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.
The problem can be corrected by upgrading your system to the
following package versions:
Ubuntu 6.06 LTS:
openssh-server 1:4.2p1-7ubuntu3.5
Ubuntu 7.04:
openssh-server 1:4.3p2-8ubuntu1.5
Ubuntu 7.10:
openssh-server 1:4.6p1-5ubuntu0.6
In general, a standard system upgrade is sufficient to effect the
necessary changes.
Details follow:
It was discovered that the ForceCommand directive could be bypassed.
If a local user created a malicious ~/.ssh/rc file, they could execute
arbitrary commands as their user id. This only affected Ubuntu 7.10.
(CVE-2008-1657)
USN-355-1 fixed vulnerabilities in OpenSSH. It was discovered that the
fixes for this issue were incomplete. A remote attacker could attempt
multiple logins, filling all available connection slots, leading to a
denial of service. This only affected Ubuntu 6.06 and 7.04.
(CVE-2008-4109)
Filed under Ubuntu