Improper Authentication Affecting curl package, versions <7.88.1-6ubuntu2


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.31% (70th percentile)

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  • Snyk IDSNYK-UBUNTU2304-CURL-5462701
  • published20 Mar 2023
  • disclosed30 Mar 2023

Introduced: 20 Mar 2023

CVE-2023-27536  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade Ubuntu:23.04 curl to version 7.88.1-6ubuntu2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Ubuntu. See How to fix? for Ubuntu:23.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1