CVE-2023-27538

2023-03-3000:00:00

CWE-305

hackerone

www.cve.org

cve-2023-27538

authentication bypass

libcurl

ssh connection

configuration check

inappropriate connection

7.4 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

JSON

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.

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "https://github.com/curl/curl",
    "versions": [
      {
        "version": "Fixed in 8.0.0",
        "status": "affected"
      }
    ]
  }
]