Improper Certificate Validation Affecting libcurl-minimal package, versions <0:7.61.1-18.el8_4.1


medium

Snyk CVSS

    Attack Complexity High

    Threat Intelligence

    EPSS 0.18% (55th percentile)
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NVD
3.7 low
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SUSE
5.4 medium
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Red Hat
3.7 low

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  • Snyk ID SNYK-CENTOS8-LIBCURLMINIMAL-2119504
  • published 26 Jul 2021
  • disclosed 21 Jul 2021

How to fix?

Upgrade Centos:8 libcurl-minimal to version 0:7.61.1-18.el8_4.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl-minimal package and not the libcurl-minimal package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

libcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse, if one of them matches the setup.Due to errors in the logic, the config matching function did not take 'issuercert' into account and it compared the involved paths case insensitively,which could lead to libcurl reusing wrong connections.File paths are, or can be, case sensitive on many systems but not all, and caneven vary depending on used file systems.The comparison also didn't include the 'issuer cert' which a transfer can setto qualify how to verify the server certificate.

References