Improper Authentication Affecting curl package, versions <8.0.1-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.31% (70th percentile)

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  • Snyk IDSNYK-ALPINE315-CURL-5422117
  • 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 Alpine:3.15 curl to version 8.0.1-r0 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 Alpine. See How to fix? for Alpine:3.15 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