Vulnerability DatabaseCVE-2013-6422
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CVE-2013-6422
December 23, 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.
Related Resources (7)
https://security-tracker.debian.org/tracker/CVE-2013-6422
http://curl.haxx.se/docs/adv_20131217.html
http://www.ubuntu.com/usn/USN-2058-1
https://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04463322
http://www.debian.org/security/2013/dsa-2824
https://people.canonical.com/~ubuntu-security/cve/CVE-2013-6422
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
CVSS v2
Base Score:
4
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Weakness Type (CWE)
Improper Input Validation
CWE-20
EPSS
Base Score:
0.25