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zdiAnonymousZDI-12-063
HistoryApr 18, 2012 - 12:00 a.m.

Samba NDR PULL SVCCTL StartServiceW Heap Overflow Remote Code Execution Vulnerability

2012-04-1800:00:00
Anonymous
www.zerodayinitiative.com
100

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.494 Medium

EPSS

Percentile

97.4%

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Samba. Authentication is not required to exploit this vulnerability. The specific flaw exists within Samba’s handling of a NDR PULL SVCCTL StartServiceW request. By sending a specially crafted packet, it is possible to cause Samba to use a different size for memory allocation than it uses for a memory copy loop. This can result in memory corruption, and may be exploited by an attacker to gain remote code execution.

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.494 Medium

EPSS

Percentile

97.4%