Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2013-6420

Severity CVSS v4.0:
Pending analysis
Type:
CWE-119 Buffer Errors
Publication date:
17/12/2013
Last modified:
11/04/2025

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.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:php:php:5.4.0:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.1:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.2:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.3:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.4:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.5:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.6:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.7:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.8:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.9:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.10:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.11:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.12:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.12:rc1:*:*:*:*:*:*
cpe:2.3:a:php:php:5.4.12:rc2:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools