CVE-2023-27536: An authentication bypass vulnerability exists libcurl <8.0.0..

debian, haxx, netapp, fedoraproject

Mar 30, 2023

Jun 6, 2023

Medium

5.9

/

10

Description

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.

Products affected:

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Severity

Medium

Medium

5.9

/

10

CVSS base metrics

Attack vector

NETWORK

Attack complexity

HIGH

Privileges required

HIGH

User interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Exploitability Score

2.2

Impact Score

3.6

Weakness

CWE-287__CWE-305__

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