Improper Handling of Exceptional Conditions Affecting ruby2.5 package, versions <2.5.9-4.20.1
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Test your applications- Snyk ID SNYK-SLES151-RUBY25-2653238
- published 14 Apr 2022
- disclosed 1 Dec 2021
Introduced: 1 Dec 2021
CVE-2021-32066 Open this link in a new tabHow to fix?
Upgrade SLES:15.1 ruby2.5 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 package and not the ruby2.5 package as distributed by SLES.
See How to fix? for SLES:15.1 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. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."
References
- https://www.suse.com/security/cve/CVE-2021-32066.html
- https://bugzilla.suse.com/1188160
- https://bugzilla.suse.com/1196771
- https://bugzilla.suse.com/1205053
- https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a
- https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/
- https://hackerone.com/reports/1178562
- https://security.netapp.com/advisory/ntap-20210902-0004/
- 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://security.gentoo.org/glsa/202401-27