NULL Pointer Dereference Affecting python2-solv package, versions <0:0.6.34-4.amzn2
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-PYTHON2SOLV-1677619
- published27 Sept 2021
- disclosed28 Dec 2018
Introduced: 28 Dec 2018
CVE-2018-20533 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 python2-solv to version 0:0.6.34-4.amzn2 or higher.
This issue was patched in ALAS2-2019-1374.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python2-solv package and not the python2-solv package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
There is a NULL pointer dereference at ext/testcase.c (function testcase_str2dep_complex) in libsolvext.a in libsolv through 0.7.2 that will cause a denial of service.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20533
- https://bugzilla.redhat.com/show_bug.cgi?id=1652599
- https://github.com/openSUSE/libsolv/pull/291
- https://access.redhat.com/errata/RHSA-2019:2290
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00057.html
- https://usn.ubuntu.com/3916-1/