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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2013-6420 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 7.5 |
|---|---|
| Base Metrics | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux EUS (v. 5.6 server) (php53) | RHSA-2013:1825 | 2013-12-11 |
| Red Hat Enterprise Linux EUS (v. 5.6 server) (php) | RHSA-2013:1824 | 2013-12-11 |
| Red Hat Enterprise Linux Extended Lifecycle Support 3 (php) | RHSA-2013:1826 | 2013-12-12 |
| Red Hat Enterprise Linux 5 (php) | RHSA-2013:1814 | 2013-12-11 |
| Red Hat Enterprise Linux Long Life (v. 5.3 server) (php) | RHSA-2013:1824 | 2013-12-11 |
| Red Hat Enterprise Linux 5 (php53) | RHSA-2013:1813 | 2013-12-11 |
| Red Hat Enterprise Linux 6 (php) | RHSA-2013:1813 | 2013-12-11 |
| Red Hat Software Collections 1 for Red Hat Enterprise Linux 6 (php54-php) | RHSA-2013:1815 | 2013-12-11 |
| Red Hat Enterprise Linux Extended Lifecycle Support 4 (php) | RHSA-2013:1826 | 2013-12-12 |
| Red Hat Enterprise Linux Extended Update Support 6.2 (php) | RHSA-2013:1824 | 2013-12-11 |
| Red Hat Enterprise Linux Extended Update Support 6.4 (php) | RHSA-2013:1824 | 2013-12-11 |
| Red Hat Enterprise Linux Extended Update Support 6.3 (php) | RHSA-2013:1824 | 2013-12-11 |
| Red Hat Enterprise Linux EUS (v. 5.9 server) (php) | RHSA-2013:1824 | 2013-12-11 |
| Red Hat Enterprise Linux EUS (v. 5.9 server) (php53) | RHSA-2013:1825 | 2013-12-11 |
| Platform | Package | State |
|---|---|---|
| Red Hat Software Collections 1 for Red Hat Enterprise Linux | php55-php | Affected |
| Red Hat OpenShift Enterprise 2 | php | Affected |
| Red Hat OpenShift Enterprise 1 | php | Affected |
| Red Hat Enterprise Linux 7 | php | Not affected |
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