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Authentication Bypass by Primary Weakness The advisory has been revoked - it doesn't affect any version of package curl  (opens in a new tab)

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EPSS
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  • Snyk IDSNYK-RHEL10-CURL-9837982
  • published28 Apr 2025
  • disclosed20 Mar 2023
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Introduced: 20 Mar 2023

CVE-2023-27538  (opens in a new tab)
CWE-305  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by RHEL.

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.