Out-of-Bounds Affecting libxml2 package, versions <0:2.9.1-6.amzn2.3.3
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.
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Test your applications- Snyk IDSNYK-AMZN2-LIBXML2-1674245
- published27 Sept 2021
- disclosed23 Nov 2017
Introduced: 23 Nov 2017
CVE-2017-16931 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 libxml2 to version 0:2.9.1-6.amzn2.3.3 or higher.
This issue was patched in ALAS2-2019-1301.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libxml2 package and not the libxml2 package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.
References
- https://bugzilla.gnome.org/show_bug.cgi?id=766956
- https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3
- http://xmlsoft.org/news.html
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16931
- https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html
- https://www.oracle.com//security-alerts/cpujul2021.html