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, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-2824-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
curl (PTS)jessie, jessie (lts)7.38.0-4+deb8u28fixed
stretch (security)7.52.1-5+deb9u16fixed
stretch (lts), stretch7.52.1-5+deb9u22fixed
buster, buster (lts)7.64.0-4+deb10u10fixed
buster (security)7.64.0-4+deb10u9fixed
bullseye7.74.0-1.3+deb11u13fixed
bullseye (security)7.74.0-1.3+deb11u14fixed
bookworm7.88.1-10+deb12u8fixed
bookworm (security)7.88.1-10+deb12u5fixed
sid, trixie8.11.1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
curlsourcesqueeze(not affected)
curlsourcewheezy7.26.0-1+wheezy7DSA-2824-1
curlsource(unstable)7.34.0-1

Notes

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

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