Improper Authentication Affecting curl package, versions <8.0.0-r0
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Test your applications- Snyk ID SNYK-ALPINE320-CURL-7008751
- published 23 May 2024
- disclosed 30 Mar 2023
Introduced: 30 Mar 2023
CVE-2023-27538 Open this link in a new tabHow to fix?
Upgrade Alpine:3.20 curl to version 8.0.0-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Alpine.
See How to fix? for Alpine:3.20 relevant fixed versions and status.
An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.
References
- https://curl.se/docs/CVE-2023-27538.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/
- https://hackerone.com/reports/1898475
- https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html
- https://security.gentoo.org/glsa/202310-12
- https://security.netapp.com/advisory/ntap-20230420-0010/