S.T.A.L.K.E.R. game server MultipacketReciever::RecievePacket() buffer overflow

stalker-multipacketreceiver-bo (43454)

High Risk

Description:

The S.T.A.L.K.E.R. game server is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the MultipacketReciever::RecievePacket() function. By sending a specially-crafted packet prepended with the 0x39 byte, a remote attacker could overflow a buffer and execute arbitrary code on the system.

*CVSS:

Base Score:	7.5
Access Vector:	Network
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	6.4
Exploitability:	Proof-of-Concept
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Gain Access

Remedy:

No remedy available as of February 6, 2010.

References:

• Luigi Auriemma Advisories, 28 Jun 2008: S.T.A.L.K.E.R.: Shadow of Chernobyl.
• S.T.A.L.K.E.R. Web site: S.T.A.L.K.E.R.: Shadow of Chernobyl.
• BID-29997: S.T.A.L.K.E.R Shadow of Chernobyl Multiple Remote Vulnerabilities
• CVE-2008-6703: Stack-based buffer overflow in the IPureServer::_Recieve function in S.T.A.L.K.E.R.: Shadow of Chernobyl 1.0006 and earlier allows remote attackers to execute arbitrary code via a compressed 0x39 packet, which is decompressed by the NET_Compressor::Decompress function.
• SA30891: S.T.A.L.K.E.R.: Shadow of Chernobyl Multiple Vulnerabilities

Platforms Affected:

• GSC Game World STALKER 1.0006

Reported:

Jun 28, 2008

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