CVE-2012-6706

critical

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

https://security.gentoo.org/glsa/201804-16

https://security.gentoo.org/glsa/201709-24

https://security.gentoo.org/glsa/201708-05

https://nakedsecurity.sophos.com/2012/11/05/tavis-ormandy-sophos/

https://lock.cmpxchg8b.com/sophailv2.pdf

https://kc.mcafee.com/corporate/index?page=content&id=SB10205

https://community.sophos.com/kb/en-us/118424#six

http://telussecuritylabs.com/threats/show/TSL20121207-01

http://securitytracker.com/id?1027725

Details

Source: Mitre, NVD

Published: 2017-06-22

Updated: 2018-10-21

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical