CVE-2012-6706

A VMSF_DELTA memory corruption was discovered in unrar before 5.5.5, as used in Sophos Anti-Virus Threat Detection Engine before 3.37.2 and other products, that can lead to arbitrary code execution. An integer overflow can be caused in DataSize+CurChannel. The result is a negative value of the "DestPos" variable, which allows the attacker to write out of bounds when setting Mem[DestPos].

Score

CVSS 3.0 9.8 Critical

Status

Modified - cve@mitre.org

Published

2017-06-22

Last modified

2024-08-06

Weaknesses

CWE-190

Affected products

• Unrar (Rarlab)
• Threat Detection Engine (Sophos)

References

• http://securitytracker.com/id?1027725
• http://telussecuritylabs.com/threats/show/TSL20121207-01
• https://bugs.chromium.org/p/project-zero/issues/detail?id=1286
• https://community.sophos.com/kb/en-us/118424#six
• https://kc.mcafee.com/corporate/index?page=content&id=SB10205
• https://lock.cmpxchg8b.com/sophailv2.pdf
• https://nakedsecurity.sophos.com/2012/11/05/tavis-ormandy-sophos/
• https://security.gentoo.org/glsa/201708-05
• https://security.gentoo.org/glsa/201709-24
• https://security.gentoo.org/glsa/201804-16