USN-617-2: Samba regression

Publication date

30 June 2008

Overview

Samba regression


Packages

Details

USN-617-1 fixed vulnerabilities in Samba. The upstream patch
introduced a regression where under certain circumstances accessing
large files might cause the client to report an invalid packet
length error. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Samba developers discovered that nmbd could be made to overrun
a buffer during the processing of GETDC logon server requests.
When samba is configured as a Primary or Backup Domain Controller,
a remote attacker could send malicious logon requests and possibly
cause a denial of service. (CVE-2007-4572)

Alin Rad Pop of Secunia Research discovered that Samba did not
properly perform bounds checking when parsing SMB replies. A remote
attacker could send crafted SMB packets and execute arbitrary code.
(CVE-2008-1105)

USN-617-1 fixed vulnerabilities in Samba. The upstream patch
introduced a regression where under certain circumstances accessing
large files might cause the client to report an invalid packet
length error. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Samba developers discovered that nmbd could be made to overrun
a buffer during the processing of GETDC logon server requests.
When samba is configured as a Primary or Backup Domain Controller,
a remote attacker could send malicious logon requests and possibly
cause a denial of service. (CVE-2007-4572)

Alin Rad Pop of Secunia Research discovered that Samba did not
properly perform bounds checking when parsing SMB replies. A remote
attacker could send crafted SMB packets and execute arbitrary code.
(CVE-2008-1105)

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
8.04 hardy libsmbclient –  3.0.28a-1ubuntu4.4
7.10 gutsy libsmbclient –  3.0.26a-1ubuntu2.5
7.04 feisty libsmbclient –  3.0.24-2ubuntu1.7
6.06 dapper libsmbclient –  3.0.22-1ubuntu3.8

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