vulnerability

Amazon Linux 2023: CVE-2023-27538: Medium priority package update for curl

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:C/I:N/A:N)
Published
Mar 20, 2023
Added
Feb 17, 2025
Modified
Jul 9, 2025

Description

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.

Solutions

amazon-linux-2023-upgrade-curlamazon-linux-2023-upgrade-curl-debuginfoamazon-linux-2023-upgrade-curl-debugsourceamazon-linux-2023-upgrade-curl-minimalamazon-linux-2023-upgrade-curl-minimal-debuginfoamazon-linux-2023-upgrade-libcurlamazon-linux-2023-upgrade-libcurl-debuginfoamazon-linux-2023-upgrade-libcurl-develamazon-linux-2023-upgrade-libcurl-minimalamazon-linux-2023-upgrade-libcurl-minimal-debuginfo
Title
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