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Samba: Denial of Service vulnerability


1.  Gentoo Linux Security Advisory

Version Information

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


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

2.  Impact Information


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


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.


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


There is no known workaround at this time.


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


Page updated July 25, 2006

Summary: This is a Gentoo Linux Security Advisory

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