Improper Neutralization of Special Elements Affecting rubygem-psych package, versions <0:2.0.0-33.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-CENTOS7-RUBYGEMPSYCH-2098358
- published26 Jul 2021
- disclosed31 Aug 2017
Introduced: 31 Aug 2017
CVE-2017-0902 (opens in a new tab)How to fix?
Upgrade Centos:7 rubygem-psych to version 0:2.0.0-33.el7_4 or higher.
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 Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
RubyGems version 2.6.12 and earlier is vulnerable to a DNS hijacking vulnerability that allows a MITM attacker to force the RubyGems client to download and install gems from a server that the attacker controls.
References
- http://www.securityfocus.com/bid/100586
- https://access.redhat.com/security/cve/CVE-2017-0902
- https://www.debian.org/security/2017/dsa-3966
- https://security.gentoo.org/glsa/201710-01
- http://blog.rubygems.org/2017/08/27/2.6.13-released.html
- https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32
- https://hackerone.com/reports/218088
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- https://access.redhat.com/errata/RHSA-2018:0378
- http://www.securitytracker.com/id/1039249
- https://usn.ubuntu.com/3553-1/
- https://usn.ubuntu.com/3685-1/