CVE-2023-27538: broadcom brocade_fabric_operating_system_firmware

Vulnerability summary

CVE-2023-27538 is a high (CVSS 7.7) vulnerability in broadcom brocade_fabric_operating_system_firmware. EPSS estimates a 1.45% chance of exploitation in the next 30 days, higher than 72.9% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 30-03-2023
   PublishedVulnerability first disclosed.
2. 14-10-2026
   Last modifiedVulnerability information updated.

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.

• CWE-305Authentication Bypass by Primary WeaknessThe authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.
• CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.