CVE-2013-6422

Description

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.

Category

4.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.34%
Vendor Advisory hp.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory haxx.se
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://curl.haxx.se/docs/adv_20131217.html vendor advisory
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
https://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04463322 vendor advisory
http://www.debian.org/security/2013/dsa-2824 vendor advisory
http://www.ubuntu.com/usn/USN-2058-1 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2013-6422?
CVE-2013-6422 has been scored as a medium severity vulnerability.
How to fix CVE-2013-6422?
To fix CVE-2013-6422, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-6422 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2013-6422 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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