Loop with Unreachable Exit Condition ('Infinite Loop') Affecting gdm-pam-extensions-devel package, versions <1:3.28.2-16.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.
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Test your applications- Snyk IDSNYK-CENTOS7-GDMPAMEXTENSIONSDEVEL-2140770
- published26 Jul 2021
- disclosed12 Mar 2018
Introduced: 12 Mar 2018
CVE-2018-15856 (opens in a new tab)How to fix?
Upgrade Centos:7 gdm-pam-extensions-devel to version 1:3.28.2-16.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream gdm-pam-extensions-devel package and not the gdm-pam-extensions-devel package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
An infinite loop when reaching EOL unexpectedly in compose/parser.c (aka the keymap parser) in xkbcommon before 0.8.1 could be used by local attackers to cause a denial of service during parsing of crafted keymap files.
References
- https://access.redhat.com/security/cve/CVE-2018-15856
- https://security.gentoo.org/glsa/201810-05
- https://github.com/xkbcommon/libxkbcommon/commit/842e4351c2c97de6051cab6ce36b4a81e709a0e1
- https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html
- https://access.redhat.com/errata/RHSA-2019:2079
- https://usn.ubuntu.com/3786-1/
- https://usn.ubuntu.com/3786-2/