CVE-2012-6706

HIGH

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].

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

Details

Source: MITRE

Published: 2017-06-22

Updated: 2018-10-21

Type: CWE-190

Risk Information

CVSS v2.0

Base Score: 10

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

Impact Score: 10

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL