What’s Vulnerable › Vulnerabilities

CVE-2023-27538

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.

Affected products

How to fix

Upgrade to a fixed version: curl 8.0.0; Splunk Universal Forwarder 8.2.12, 9.0.6. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2023-27538 or the next vulnerability affects your stack