Directory Traversal The advisory has been revoked - it doesn't affect any version of package jruby (opens in a new tab)
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-DEBIAN11-JRUBY-529174
- published27 Mar 2019
- disclosed6 Jun 2019
Introduced: 27 Mar 2019
CVE-2019-8320 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:11.
NVD Description
Note: Versions mentioned in the description apply only to the upstream jruby package and not the jruby package as distributed by Debian.
A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination. If that destination was hidden behind a symlink, a malicious gem could delete arbitrary files on the user's machine, presuming the attacker could guess at paths. Given how frequently gem is run as sudo, and how predictable paths are on modern systems (/tmp, /usr, etc.), this could likely lead to data loss or an unusable system.
References
- https://security-tracker.debian.org/tracker/CVE-2019-8320
- https://blog.rubygems.org/2019/03/05/security-advisories-2019-03.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8320
- https://hackerone.com/reports/317321
- https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html
- https://access.redhat.com/errata/RHSA-2019:1429
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-8320