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Debian 5.0 Lenny DSA-2061-1 Critical: Samba Memory Corruption

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Calendar Grey June 16, 2010
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Explore Debian DSA-2061-1: resolution of samba vulnerabilities connected to memory dysfunctions impacting the potential for remote exploitation.
Jun Mao discovered that Samba, an implementation of the SMB/CIFS protocol for Unix systems, is not properly handling certain offset values when processing chained SMB1 packets

Summary

Jun Mao discovered that Samba, an implementation of the SMB/CIFS protocol
for Unix systems, is not properly handling certain offset values when
processing chained SMB1 packets. This enables an unauthenticated attacker
to write to an arbitrary memory location resulting in the possibility to
execute arbitrary code with root privileges or to perform denial of service
attacks by crashing the samba daemon.


For the stable distribution (lenny), this problem has been fixed in
version 3.2.5-4lenny12.

This problem does not affect the versions in the testing (squeeze) and
unstable (sid) distribution.


We recommend that you upgrade your samba packages.

Upgrade instructions
- --------------------

wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
will install corrected packages

You may use an aut...

Read the Full Advisory

Severity
critical
Lowest
Low
Medium
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Critical

Package: samba
CVE ID: CVE-2010-2063

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