Uncontrolled Recursion Affecting yara package, versions <3.6.1+dfsg-1
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-DEBIANUNSTABLE-YARA-296529
- published5 Jun 2017
- disclosed5 Jun 2017
Introduced: 5 Jun 2017
CVE-2017-9438 (opens in a new tab)How to fix?
Upgrade Debian:unstable yara to version 3.6.1+dfsg-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream yara package and not the yara package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
libyara/re.c in the regexp module in YARA 3.5.0 allows remote attackers to cause a denial of service (stack consumption) via a crafted rule (involving hex strings) that is mishandled in the _yr_re_emit function, a different vulnerability than CVE-2017-9304.
References
- https://security-tracker.debian.org/tracker/CVE-2017-9438
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FKNXSH5ERG6NELTXCYVJLUPJJJ2TNEBD/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XXM224OLGI6KAOROLDPPGGCZ2OQVQ6HH/
- https://github.com/VirusTotal/yara/commit/10e8bd3071677dd1fa76beeef4bc2fc427cea5e7
- https://github.com/VirusTotal/yara/issues/674
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-9438
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FKNXSH5ERG6NELTXCYVJLUPJJJ2TNEBD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXM224OLGI6KAOROLDPPGGCZ2OQVQ6HH/