1. Ubuntu Security Notices
  2. USN-556-1

USN-556-1: Samba vulnerability

Publication date

18 December 2007

Overview

Samba vulnerability

Releases

Packages

Details

Alin Rad Pop discovered that Samba did not correctly check the size
of reply packets to mailslot requests. If a server was configured
with domain logon enabled, an unauthenticated remote attacker could send
a specially crafted domain logon packet and execute arbitrary code or
crash the Samba service. By default, domain logon is disabled in Ubuntu.

Alin Rad Pop discovered that Samba did not correctly check the size
of reply packets to mailslot requests. If a server was configured
with domain logon enabled, an unauthenticated remote attacker could send
a specially crafted domain logon packet and execute arbitrary code or
crash the Samba service. By default, domain logon is disabled in Ubuntu.

Update instructions

In general, a standard system upgrade is sufficient to effect the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
7.10 gutsy libsmbclient –  3.0.26a-1ubuntu2.3
samba –  3.0.26a-1ubuntu2.3
7.04 feisty libsmbclient –  3.0.24-2ubuntu1.5
samba –  3.0.24-2ubuntu1.5
6.10 edgy libsmbclient –  3.0.22-1ubuntu4.5
samba –  3.0.22-1ubuntu4.5
6.06 dapper libsmbclient –  3.0.22-1ubuntu3.6
samba –  3.0.22-1ubuntu3.6

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References

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