CVE-2021-31810 Affecting ruby2.5-devel-extra package, versions <2.5.9-4.20.1
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Test your applications- Snyk ID SNYK-SLES150-RUBY25DEVELEXTRA-2653194
- published 14 Apr 2022
- disclosed 1 Dec 2021
Introduced: 1 Dec 2021
CVE-2021-31810 Open this link in a new tabHow to fix?
Upgrade SLES:15.0 ruby2.5-devel-extra to version 2.5.9-4.20.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ruby2.5-devel-extra package and not the ruby2.5-devel-extra package as distributed by SLES.
See How to fix? for SLES:15.0 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://www.suse.com/security/cve/CVE-2021-31810.html
- https://bugzilla.suse.com/1188161
- https://bugzilla.suse.com/1193383
- https://bugzilla.suse.com/1205053
- https://www.ruby-lang.org/en/news/2021/07/07/trusting-pasv-responses-in-net-ftp/
- https://hackerone.com/reports/1145454
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/
- https://security.netapp.com/advisory/ntap-20210917-0001/
- https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html
- 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