Improper Authentication Affecting curl package, versions <7.88.1-r1


0.0
medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High

    Threat Intelligence

    EPSS 0.04% (9th percentile)
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NVD
5.5 medium
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SUSE
5.8 medium
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Red Hat
5.5 medium

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  • Snyk ID SNYK-ALPINE317-CURL-3364762
  • published 20 Mar 2023
  • disclosed 30 Mar 2023

How to fix?

Upgrade Alpine:3.17 curl to version 7.88.1-r1 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:3.17 relevant fixed versions and status.

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.