Link Following Affecting mercurial package, versions <4.0-1+deb9u2
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-DEBIAN9-MERCURIAL-344216
- published20 Apr 2019
- disclosed22 Apr 2019
Introduced: 20 Apr 2019
CVE-2019-3902 (opens in a new tab)How to fix?
Upgrade Debian:9 mercurial to version 4.0-1+deb9u2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream mercurial package and not the mercurial package as distributed by Debian.
See How to fix? for Debian:9 relevant fixed versions and status.
A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository.
References
- https://security-tracker.debian.org/tracker/CVE-2019-3902
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3902
- https://lists.debian.org/debian-lts-announce/2019/04/msg00024.html
- https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.9_.282019-02-01.29
- https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3902
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-3902
- https://usn.ubuntu.com/4086-1/