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CVE-2012-6706

Exploit
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].
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Sophos ≫ Threat Detection Engine Version <= 3.36.2
RARLAB ≫ UnRAR Version <= 5.5.4
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 10.03% 0.95
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 9.8 3.9 5.9
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 10 10 10
AV:N/AC:L/Au:N/C:C/I:C/A:C
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

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