An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3398-1 curl security update
EUVD EUVD EUVD-2023-31291 An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.
Ubuntu USN Ubuntu USN USN-5964-1 curl vulnerabilities
Ubuntu USN Ubuntu USN USN-5964-2 curl vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 14 Feb 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2025-02-14T15:39:25.676Z

Reserved: 2023-03-02T00:00:00.000Z

Link: CVE-2023-27536

cve-icon Vulnrichment

Updated: 2024-08-02T12:16:35.616Z

cve-icon NVD

Status : Modified

Published: 2023-03-30T20:15:07.547

Modified: 2025-02-14T16:15:33.497

Link: CVE-2023-27536

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-03-20T00:00:00Z

Links: CVE-2023-27536 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses