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CVE-2013-6422

Published: 17 December 2013

The GnuTLS backend in libcurl 7.21.4 through 7.33.0, when disabling digital signature verification (CURLOPT_SSL_VERIFYPEER), also disables the CURLOPT_SSL_VERIFYHOST check for CN or SAN host name fields, which makes it easier for remote attackers to spoof servers and conduct man-in-the-middle (MITM) attacks.

Notes

AuthorNote
seth-arnold
Similar to but different from CVE-2013-4545

Priority

Medium

Status

Package Release Status
curl
Launchpad, Ubuntu, Debian
lucid Not vulnerable
(7.19.7-1ubuntu1.3)
precise
Released (7.22.0-3ubuntu4.6)
quantal
Released (7.27.0-1ubuntu1.7)
raring
Released (7.29.0-1ubuntu3.4)
saucy
Released (7.32.0-1ubuntu1.2)
upstream Pending
(7.34.0-1)