Samba SID Parsing Remote Stack Overflow Vulnerability

Release date:
Updated on: 2010-09-15

Affected Systems:
Samba 3.0.x-3.5.x
Unaffected system:
Samba 3.5.5
Description:
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Bugtraq id: 43212
Cve id: CVE-2010-3069

Samba is a set of programs that implement the SMB (Server Messages Block) protocol, cross-platform file sharing and print sharing services.

When reading the binary representation of Windows SID (Security ID) in the sid_parse () function of Samba and related dom_sid_parse () function, the input length is not correctly checked, malicious clients can send sid overflow to the stack variable used to store SID on the smbd server, resulting in arbitrary code execution.

<* Source: Andrew Bartlett

Link: http://secunia.com/advisories/41354/
Http://us1.samba.org/samba/security/CVE-2010-3069.html
Https://www.redhat.com/support/errata/RHSA-2010-0698.html
Https://www.redhat.com/support/errata/RHSA-2010-0697.html
*>

Suggestion:
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Vendor patch:

RedHat
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For this reason, RedHat has released a Security Bulletin (RHSA-2010: 0697-01) and patch:
RHSA-2010: 0697-01: Critical: samba security and bug fix update
Link: https://www.redhat.com/support/errata/RHSA-2010-0697.html

Samba
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The vendor has released a patch to fix this security problem. Please download it from the vendor's homepage:

Http://us1.samba.org/samba/history/samba-3.5.5.html