Resource Exhaustion Affecting libxml2-static package, versions <0:2.9.1-6.el7.4
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-RHEL7-LIBXML2STATIC-1527066
- published26 Jul 2021
- disclosed7 Sept 2017
Introduced: 7 Sep 2017
CVE-2017-18258 (opens in a new tab)How to fix?
Upgrade RHEL:7 libxml2-static to version 0:2.9.1-6.el7.4 or higher.
This issue was patched in RHSA-2020:1190.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libxml2-static package and not the libxml2-static package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.
References
- https://kc.mcafee.com/corporate/index?page=content&id=SB10284
- https://security.netapp.com/advisory/ntap-20190719-0001/
- https://access.redhat.com/security/cve/CVE-2017-18258
- https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bb
- https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html
- https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
- https://access.redhat.com/errata/RHSA-2020:1190
- https://usn.ubuntu.com/3739-1/