CVE-2013-6422

NameCVE-2013-6422
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-2824-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
curl (PTS)wheezy7.26.0-1+wheezy13fixed
wheezy (security)7.26.0-1+wheezy17fixed
jessie7.38.0-4+deb8u4fixed
jessie (security)7.38.0-4+deb8u5fixed
stretch7.50.1-1fixed
sid7.51.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
curlsource(unstable)7.34.0-1medium
curlsourcesqueeze(not affected)
curlsourcewheezy7.26.0-1+wheezy7mediumDSA-2824-1

Notes

[squeeze] - curl <not-affected> (issue introduced with 59cf93cc, 7.21.4)

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