vulnerability

Red Hat: CVE-2023-27536: curl: GSS delegation too eager connection re-use (Multiple Advisories)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:C/I:N/A:N)
Published
Mar 30, 2023
Added
Aug 9, 2023
Modified
Nov 14, 2025

Description

An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.

Solutions

no-fix-redhat-rpm-packageredhat-upgrade-curlredhat-upgrade-curl-debuginforedhat-upgrade-curl-debugsourceredhat-upgrade-curl-minimalredhat-upgrade-curl-minimal-debuginforedhat-upgrade-libcurlredhat-upgrade-libcurl-debuginforedhat-upgrade-libcurl-develredhat-upgrade-libcurl-minimalredhat-upgrade-libcurl-minimal-debuginfo
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