Technical Description

A vulnerability has been identified in Samba, which could be exploited by remote attackers to cause a denial of service or compromise a vulnerable system. This issue is caused by a buffer overflow error in the "receive_smb_raw()" [lib/util_sock.c] function when processing overly large SMB packets received in a client context, which could be exploited by attackers to crash an affected application or execute arbitrary code by tricking a user into connecting to a malicious server (e.g. by following an "smb://" link) or by sending specially crafted packets to an "nmbd" server configured as a local or domain master browser.

Affected Products

Samba version 3.0.29 and prior

Solution

Upgrade to Samba version 3.0.30 :
http://us1.samba.org/samba/download/

References

http://www.vupen.com/english/advisories/2008/1681
http://www.samba.org/samba/security/CVE-2008-1105.html
http://secunia.com/secunia_research/2008-20/advisory

Credits

Vulnerability reported by Alin Rad Pop (Secunia Research).

ChangeLog

2008-05-28 : Initial release

Vulnerability Management

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