Use of Incorrectly-Resolved Name or Reference Affecting curl package, versions <7.74.0-1.3+deb11u2



    Attack Complexity High

    Threat Intelligence

    EPSS 0.13% (48th percentile)
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3.7 low
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5.4 medium
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Red Hat
3.7 low

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  • Snyk ID SNYK-DEBIAN11-CURL-1322658
  • published 22 Jul 2021
  • disclosed 5 Aug 2021

How to fix?

Upgrade Debian:11 curl to version 7.74.0-1.3+deb11u2 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 Debian:11. See How to fix? for Debian:11 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.