Samba: Denial of Service vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200607-10 / samba
Release Date	July 25, 2006
Latest Revision	July 25, 2006: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-fs/samba	< 3.0.22-r3	>= 3.0.22-r3	All supported architectures

Related bugreports: #139369

Synopsis

A large number of share connection requests could cause a Denial of Service within Samba.

2. Impact Information

Background

Samba is a freely available SMB/CIFS implementation which allows seamless interoperability of file and print services to other SMB/CIFS clients.

Description

During an internal audit the Samba team discovered that a flaw in the way Samba stores share connection requests could lead to a Denial of Service.

Impact

By sending a large amount of share connection requests to a vulnerable Samba server, an attacker could cause a Denial of Service due to memory consumption.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Samba users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-fs/samba-3.0.22-r3"

4. References

CVE-2006-3403

Page updated July 25, 2006

Summary: This is a Gentoo Linux Security Advisory

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