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CVE-2013-6420

Public on 2013-12-17
Modified on 2014-09-16
Description

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.

Severity
Critical
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CVSS v3 Base Score
7.5
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 php 2013-12-17 21:29 ALAS-2013-262
Amazon Linux 1 php54 2013-12-17 21:29 ALAS-2013-263
Amazon Linux 1 php55 2013-12-17 21:29 ALAS-2013-264

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv2 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
NVD CVSSv2 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P