CVE-2021-22924

Published: 21 July 2021

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.

Priority

Medium

CVSS 3 base score: 3.7

Status

Package Release Status
curl
Launchpad, Ubuntu, Debian
Upstream
Released (7.78.0)
Ubuntu 21.04 (Hirsute Hippo)
Released (7.74.0-1ubuntu2.1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (7.68.0-1ubuntu2.6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (7.58.0-2ubuntu3.14)
Ubuntu 16.04 ESM (Xenial Xerus) Needs triage

Ubuntu 14.04 ESM (Trusty Tahr) Needs triage