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PHP CVEs

Vulnerabilities in the PHP language itself, and which PHP versions they affect.

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CVE-2013-6420

HIGH 7.5 CVSS 2.0
Published
December 17, 2013
Last modified
June 17, 2026
NVD status
Modified
Reported by
secalert@redhat.com
Weakness
CWE-119
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P

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.

Affected products and versions

  • PHP — Up to and including 5.3.27
  • PHP versions 5.3.0, 5.3.1, 5.3.2, 5.3.3, 5.3.4, 5.3.5, 5.3.6, 5.3.7, 5.3.8, 5.3.9, 5.3.10, 5.3.11, 5.3.12, 5.3.13, 5.3.14, 5.3.15, 5.3.16, 5.3.17, 5.3.18, 5.3.19, 5.3.20, 5.3.21, 5.3.22, 5.3.23, 5.3.24, 5.3.25, 5.3.26, 5.4.0, 5.4.1, 5.4.2, 5.4.3, 5.4.4, 5.4.5, 5.4.6, 5.4.7, 5.4.8, 5.4.9, 5.4.10, 5.4.11, 5.4.12, 5.4.12rc1, 5.4.12rc2, 5.4.13, 5.4.13rc1, 5.4.14, 5.4.14rc1, 5.4.15, 5.4.15rc1, 5.4.16, 5.4.16rc1, 5.4.17, 5.4.18, 5.4.19, 5.4.20, 5.4.21, 5.4.22, 5.5.0, 5.5.0alpha1, 5.5.0alpha2, 5.5.0alpha3, 5.5.0alpha4, 5.5.0alpha5, 5.5.0alpha6, 5.5.0beta1, 5.5.0beta2, 5.5.0beta3, 5.5.0beta4, 5.5.0rc1, 5.5.0rc2, 5.5.1, 5.5.2, 5.5.3, 5.5.4, 5.5.5, 5.5.6

References