Double Free Affecting gettext-tools package, versions <0.19.8.1-4.8.1
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.
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Test your applications- Snyk IDSNYK-SLES151-GETTEXTTOOLS-2703918
- published14 Apr 2022
- disclosed24 Aug 2020
Introduced: 24 Aug 2020
CVE-2018-18751 (opens in a new tab)How to fix?
Upgrade SLES:15.1 gettext-tools to version 0.19.8.1-4.8.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream gettext-tools package and not the gettext-tools package as distributed by SLES.
See How to fix? for SLES:15.1 relevant fixed versions and status.
An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt.
References
- https://www.suse.com/security/cve/CVE-2018-18751.html
- https://bugzilla.suse.com/1113719
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html
- https://access.redhat.com/errata/RHSA-2019:3643
- https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefree
- https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption
- https://usn.ubuntu.com/3815-1/
- https://usn.ubuntu.com/3815-2/