CVE-2013-6420
HIGH severity · CVSS 7.5 · Memory corruption
7.5CVSS HIGH
Summary
The asn1_time_to_time_t function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse (1) notBefore and (2) notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted certificate that is not properly handled by the openssl_x509_parse function.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impact—
Integrity impact—
Availability impact—
Exploit probability (EPSS)40%
AV:N/AC:L/Au:N/C:P/I:P/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://forums.interworx.com/threads/8000-InterWorx-Version-5-0-14-Released-on-Beta-Channel%21
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=c1224573c773b6845e83505f717fbf820fc18415
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00125.html
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00126.html
- http://rhn.redhat.com/errata/RHSA-2013-1813.html
- http://rhn.redhat.com/errata/RHSA-2013-1815.html
- http://rhn.redhat.com/errata/RHSA-2013-1824.html
- http://rhn.redhat.com/errata/RHSA-2013-1825.html