Directory Traversal Affecting rubygem-psych package, versions <0:2.0.0-35.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-RUBYGEMPSYCH-4862437
- published26 Jul 2021
- disclosed15 Feb 2018
Introduced: 15 Feb 2018
CVE-2018-1000079 (opens in a new tab)How to fix?
Upgrade RHEL:7 rubygem-psych to version 0:2.0.0-35.el7_4 or higher.
This issue was patched in RHSA-2020:0591.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rubygem-psych package and not the rubygem-psych package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6.
References
- https://access.redhat.com/security/cve/CVE-2018-1000079
- https://www.debian.org/security/2018/dsa-4219
- https://www.debian.org/security/2018/dsa-4259
- http://blog.rubygems.org/2018/02/15/2.7.6-released.html
- https://github.com/rubygems/rubygems/commit/666ef793cad42eed96f7aee1cdf77865db921099
- https://github.com/rubygems/rubygems/commit/f83f911e19e27cbac1ccce7471d96642241dd759
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- https://access.redhat.com/errata/RHSA-2020:0591
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- https://usn.ubuntu.com/3621-1/