Improper Authentication Affecting curl-minimal package, versions <0:7.76.1-26.el9


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ALMALINUX9-CURLMINIMAL-6060450
  • published15 Nov 2023
  • disclosed7 Nov 2023

Introduced: 7 Nov 2023

CVE-2023-27538  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 curl-minimal to version 0:7.76.1-26.el9 or higher.
This issue was patched in ALSA-2023:6679.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl-minimal package and not the curl-minimal package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 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.

CVSS Scores

version 3.1