NULL Pointer Dereference Affecting python2-solv package, versions <0:0.6.34-4.el7
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 applicationsSnyk Learn
Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-RHEL7-PYTHON2SOLV-4893737
- published26 Jul 2021
- disclosed22 Nov 2018
Introduced: 22 Nov 2018
CVE-2018-20532 (opens in a new tab)How to fix?
Upgrade RHEL:7 python2-solv to version 0:0.6.34-4.el7 or higher.
This issue was patched in RHSA-2019:2290.
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 RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
There is a NULL pointer dereference at ext/testcase.c (function testcase_read) in libsolvext.a in libsolv through 0.7.2 that will cause a denial of service.
References
- https://access.redhat.com/security/cve/CVE-2018-20532
- https://bugzilla.redhat.com/show_bug.cgi?id=1652605
- 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/