Information Exposure Affecting rubygem-psych package, versions <0:3.1.0-108.module+el8.5.0+13719+08a8ba32
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Test your applications- Snyk ID SNYK-CENTOS8-RUBYGEMPSYCH-1965092
- published 26 Jul 2021
- disclosed 7 Jul 2021
Introduced: 7 Jul 2021
CVE-2021-31810 Open this link in a new tabHow to fix?
Upgrade Centos:8 rubygem-psych to version 0:3.1.0-108.module+el8.5.0+13719+08a8ba32 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:8 relevant fixed versions and status.
An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).
References
- https://security.netapp.com/advisory/ntap-20210917-0001/
- https://access.redhat.com/security/cve/CVE-2021-31810
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/
- https://hackerone.com/reports/1145454
- https://www.ruby-lang.org/en/news/2021/07/07/trusting-pasv-responses-in-net-ftp/
- https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html
- https://access.redhat.com/errata/RHSA-2022:0543
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/
- https://security.gentoo.org/glsa/202401-27