Improper Input Validation Affecting ruby-libs package, versions <0:2.0.0.648-37.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-RUBYLIBS-4861510
- published26 Jul 2021
- disclosed17 Oct 2018
Introduced: 17 Oct 2018
CVE-2018-16396 (opens in a new tab)How to fix?
Upgrade RHEL:7 ruby-libs to version 0:2.0.0.648-37.el7_4 or higher.
This issue was patched in RHSA-2020:2769.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ruby-libs package and not the ruby-libs package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats.
References
- https://security.netapp.com/advisory/ntap-20190221-0002/
- https://www.ruby-lang.org/en/news/2018/10/17/not-propagated-taint-flag-in-some-formats-of-pack-cve-2018-16396/
- https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/
- https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/
- https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/
- https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/
- https://access.redhat.com/security/cve/CVE-2018-16396
- https://www.debian.org/security/2018/dsa-4332
- https://hackerone.com/reports/385070
- https://lists.debian.org/debian-lts-announce/2018/10/msg00020.html
- http://www.securitytracker.com/id/1042106
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- https://usn.ubuntu.com/3808-1/