CVE-2012-6706 Information

Description

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].

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

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/118424six 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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8