Out-of-Bounds Affecting p7zip-rar package, versions *
Threat Intelligence
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UBUNTU1604-P7ZIPRAR-1175707
- published22 Oct 2025
- disclosed31 Jan 2018
Introduced: 31 Jan 2018
CVE-2018-5996 (opens in a new tab)How to fix?
There is no fixed version for Ubuntu:16.04 p7zip-rar.
NVD Description
Note: Versions mentioned in the description apply only to the upstream p7zip-rar package and not the p7zip-rar package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
Insufficient exception handling in the method NCompress::NRar3::CDecoder::Code of 7-Zip before 18.00 and p7zip can lead to multiple memory corruptions within the PPMd code, allows remote attackers to cause a denial of service (segmentation fault) or execute arbitrary code via a crafted RAR archive.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-5996
- https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html
- https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/
- http://www.securitytracker.com/id/1040831
- https://github.com/p7zip-project/p7zip/issues/32
- https://github.com/p7zip-project/p7zip/issues/8