CVE-2023-27538

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.

Affected products

Alt Linux, Almalinux, Astra Linux, Ibm Aix, Linuxmint, Red Hat, Red Os, Suse

Haxx Libcurl

< 8.0.0

Fix

Available

CVSS 3.1

7.7 HIGH

EPSS

1.3% (67th percentile)

Weakness

CWE-287, CWE-305

NVD status

Modified

Published

2023-03-30

No exploit for CVE-2023-27538 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.