Integer Overflow or Wraparound Affecting libclamunrar package, versions <0.99-4ubuntu1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-LIBCLAMUNRAR-284611
- published22 Jun 2017
- disclosed22 Jun 2017
Introduced: 22 Jun 2017
CVE-2012-6706 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.04 libclamunrar to version 0.99-4ubuntu1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libclamunrar package and not the libclamunrar package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
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://people.ubuntu.com/~ubuntu-security/cve/CVE-2012-6706
- https://kc.mcafee.com/corporate/index?page=content&id=SB10205
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-6706
- https://security-tracker.debian.org/tracker/CVE-2012-6706
- https://security.gentoo.org/glsa/201708-05
- https://security.gentoo.org/glsa/201709-24
- https://security.gentoo.org/glsa/201804-16
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1286
- https://community.sophos.com/kb/en-us/118424#six
- http://securitytracker.com/id?1027725
- https://lock.cmpxchg8b.com/sophailv2.pdf
- https://nakedsecurity.sophos.com/2012/11/05/tavis-ormandy-sophos/
- http://telussecuritylabs.com/threats/show/TSL20121207-01
- https://www.exploit-db.com/exploits/44402