CVEvulnerability

CVE-2023-27538

5.5 MEDIUM Published 2023-03-30 Modified 2026-10-14 Official page ↗
Status
Modified
Published
2023-03-30
Last modified
2026-10-14
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.7 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weaknesses
CWE-287, CWE-305

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 configurations

• haxx libcurl (>= 7.16.1 < 8.0.0) • fedoraproject fedora 36 • debian debian linux 10.0 • netapp active iq unified manager • netapp clustered data ontap 9.0 • broadcom brocade fabric operating system firmware • netapp h300s firmware • netapp h500s firmware • netapp h700s firmware • netapp h410s firmware • splunk universal forwarder (>= 8.2.0 < 8.2.12) • splunk universal forwarder (>= 9.0.0 < 9.0.6) • splunk universal forwarder 9.1.0

Related

Weakness · CWE (2)

  • CWE-287 Improper Authentication weakness
  • CWE-305 Authentication Bypass by Primary Weakness weakness

References