Samba: Heap-based buffer overflow — GLSA 200805-23

A heap-based buffer overflow vulnerability was found in Samba, allowing for the execution of arbitrary code.

Affected Packages

net-fs/samba on all architectures
Affected versions < 3.0.28a-r1
Unaffected versions >= 3.0.28a-r1

Background

Samba is a suite of SMB and CIFS client/server programs.

Description

Alin Rad Pop (Secunia Research) reported a vulnerability in Samba within the receive_smb_raw() function in the file lib/util_sock.c when parsing SMB packets, possibly leading to a heap-based buffer overflow via an overly large SMB packet.

Impact

A remote attacker could possibly exploit this vulnerability by enticing a user to connect to a malicious server or by sending specially crafted packets to an nmbd server configured as a local or domain master browser, resulting in the execution of arbitrary code.

Workaround

There is no known workaround at this time.

Resolution

All Samba users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-fs/samba-3.0.28a-r1"

References

Release Date
May 29, 2008

Latest Revision
May 29, 2008: 01

Severity
normal

Exploitable
remote

Bugzilla entries