Vulnerability Details : CVE-2013-6422
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.
Vulnerability category: Input validation
Products affected by CVE-2013-6422
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:13.10:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.26.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.28.1:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.27.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.28.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.21.4:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.21.5:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.25.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.23.1:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.24.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.30.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.21.6:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.21.7:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.22.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.23.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.29.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.31.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.32.0:*:*:*:*:*:*:*
- cpe:2.3:a:haxx:libcurl:7.33.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2013-6422
0.25%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 62 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2013-6422
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:H/Au:N/C:P/I:P/A:N |
4.9
|
4.9
|
NIST |
CWE ids for CVE-2013-6422
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2013-6422
-
https://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04463322
HP Support for Technical Help and Troubleshooting | HP® Customer Service.
-
http://curl.haxx.se/docs/adv_20131217.html
curl - cert name check ignore GnuTLS - CVE-2013-6422Vendor Advisory
-
http://www.ubuntu.com/usn/USN-2058-1
USN-2058-1: curl vulnerability | Ubuntu security notices
-
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
Oracle Critical Patch Update - July 2015
-
http://www.debian.org/security/2013/dsa-2824
Debian -- Security Information -- DSA-2824-1 curl
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