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CVE-2013-6420

Status Candidate

Overview

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.

Related Files

HP Security Bulletin HPSBMU03112
Posted Oct 1, 2014
Authored by HP | Site hp.com

HP Security Bulletin HPSBMU03112 - Potential security vulnerabilities have been identified with HP System Management Homepage (SMH) on Linux and Windows. The vulnerabilities could be exploited remotely resulting in Cross-site Scripting (XSS), Cross-site Request Forgery (CSRF), unauthorized disclosure of information, Denial of Service (DoS), and Clickjacking. Revision 1 of this advisory.

tags | advisory, denial of service, vulnerability, xss, csrf
systems | linux, windows
advisories | CVE-2013-4545, CVE-2013-6420, CVE-2013-6422, CVE-2013-6712, CVE-2014-2640, CVE-2014-2641, CVE-2014-2642
MD5 | 096a4b6e918fe386022d2a0049754ee0
Gentoo Linux Security Advisory 201408-11
Posted Aug 29, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201408-11 - Multiple vulnerabilities have been discovered in PHP, the worst of which could lead to remote execution of arbitrary code. Versions less than 5.5.16 are affected.

tags | advisory, remote, arbitrary, php, vulnerability
systems | linux, gentoo
advisories | CVE-2011-4718, CVE-2013-1635, CVE-2013-1643, CVE-2013-1824, CVE-2013-2110, CVE-2013-3735, CVE-2013-4113, CVE-2013-4248, CVE-2013-4635, CVE-2013-4636, CVE-2013-6420, CVE-2013-6712, CVE-2013-7226, CVE-2013-7327, CVE-2013-7345, CVE-2014-0185, CVE-2014-0237, CVE-2014-0238, CVE-2014-1943, CVE-2014-2270, CVE-2014-2497, CVE-2014-3597, CVE-2014-3981, CVE-2014-4049, CVE-2014-4670, CVE-2014-5120
MD5 | 9fc05cd1682ef7aee444653346de8eae
Apple Security Advisory 2014-02-25-1
Posted Feb 26, 2014
Authored by Apple | Site apple.com

Apple Security Advisory 2014-02-25-1 - OS X Mavericks 10.9.2 and Security Update 2014-001 is now available and addresses multiple security issues including the recent SSL vulnerability.

tags | advisory
systems | apple, osx
advisories | CVE-2011-3389, CVE-2013-1862, CVE-2013-1896, CVE-2013-4073, CVE-2013-4113, CVE-2013-4248, CVE-2013-5139, CVE-2013-5178, CVE-2013-5179, CVE-2013-5986, CVE-2013-5987, CVE-2013-6420, CVE-2013-6629, CVE-2014-1245, CVE-2014-1246, CVE-2014-1247, CVE-2014-1248, CVE-2014-1249, CVE-2014-1250, CVE-2014-1252, CVE-2014-1254, CVE-2014-1255, CVE-2014-1256, CVE-2014-1257, CVE-2014-1258, CVE-2014-1259, CVE-2014-1260, CVE-2014-1261
MD5 | 77202653b9ef1fb712388ec7bd192749
Mandriva Linux Security Advisory 2014-014
Posted Jan 22, 2014
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2014-014 - The openssl_x509_parse function in openssl.c in the OpenSSL module in PHP before 5.4.18 and 5.5.x before 5.5.2 does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408. 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 notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service via a crafted certificate that is not properly handled by the openssl_x509_parse function. The scan function in ext/date/lib/parse_iso_intervals.c in PHP through 5.5.6 does not properly restrict creation of DateInterval objects, which might allow remote attackers to cause a denial of service via a crafted interval specification. The updated php packages have been upgraded to the 5.5.8 version which is not vulnerable to these issues. Additionally, the PECL packages which requires so has been rebuilt for php-5.5.8 and some has been upgraded to their latest versions.

tags | advisory, remote, denial of service, arbitrary, spoof, php
systems | linux, mandriva
advisories | CVE-2013-4248, CVE-2013-6420, CVE-2013-6712
MD5 | 66a6b2d968520ca2164d47a14b5f87f7
Slackware Security Advisory - php Updates
Posted Jan 14, 2014
Authored by Slackware Security Team | Site slackware.com

Slackware Security Advisory - New php packages are available for Slackware 14.0, 14.1, and -current to fix a security issue.

tags | advisory, php
systems | linux, slackware
advisories | CVE-2013-6420
MD5 | 6652c8bd9e588b0ac0d7bc360d057820
Mandriva Linux Security Advisory 2013-298
Posted Dec 22, 2013
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2013-298 - 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 notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service via a crafted certificate that is not properly handled by the openssl_x509_parse function. The updated packages have been upgraded to the 5.3.28 version which is not vulnerable to this issue. Additionally, some packages which requires so has been rebuilt for php-5.3.28.

tags | advisory, remote, denial of service, arbitrary, php
systems | linux, mandriva
advisories | CVE-2013-6420
MD5 | cb859dace563529b36f141520a646272
PHP openssl_x509_parse() Memory Corruption
Posted Dec 15, 2013
Authored by Stefan Esser

The PHP function openssl_x509_parse() uses a helper function called asn1_time_to_time_t() to convert timestamps from ASN1 string format into integer timestamp values. The parser within this helper function is not binary safe and can therefore be tricked to write up to five NUL bytes outside of an allocated buffer. This problem can be triggered by x509 certificates that contain NUL bytes in their notBefore and notAfter timestamp fields and leads to a memory corruption that might result in arbitrary code execution.

tags | exploit, arbitrary, php, code execution
advisories | CVE-2013-6420
MD5 | 4772f42be1cda33cfe7c31e1ec898d91
Ubuntu Security Notice USN-2055-1
Posted Dec 14, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2055-1 - Stefan Esser discovered that PHP incorrectly parsed certificates. An attacker could use a malformed certificate to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. It was discovered that PHP incorrectly handled DateInterval objects. An attacker could use this issue to cause PHP to crash, resulting in a denial of service.

tags | advisory, denial of service, arbitrary, php
systems | linux, ubuntu
advisories | CVE-2013-6420, CVE-2013-6712, CVE-2013-6420, CVE-2013-6712
MD5 | 916beb41f134d201de0109172ed0550c
Debian Security Advisory 2816-1
Posted Dec 14, 2013
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2816-1 - Several vulnerabilities were found in PHP, a general-purpose scripting language commonly used for web application development.

tags | advisory, web, php, vulnerability
systems | linux, debian
advisories | CVE-2013-6420, CVE-2013-6712
MD5 | 962a874bbfa0c615659f16545ecea4f8
Red Hat Security Advisory 2013-1826-01
Posted Dec 12, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-1826-01 - PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. A memory corruption flaw was found in the way the openssl_x509_parse() function of the PHP openssl extension parsed X.509 certificates. A remote attacker could use this flaw to provide a malicious self-signed certificate or a certificate signed by a trusted authority to a PHP application using the aforementioned function, causing the application to crash or, possibly, allow the attacker to execute arbitrary code with the privileges of the user running the PHP interpreter.

tags | advisory, remote, web, arbitrary, php
systems | linux, redhat
advisories | CVE-2013-6420
MD5 | 8e350a798d9af347615919f9b07b39b8
Red Hat Security Advisory 2013-1824-01
Posted Dec 12, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-1824-01 - PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. A memory corruption flaw was found in the way the openssl_x509_parse() function of the PHP openssl extension parsed X.509 certificates. A remote attacker could use this flaw to provide a malicious self-signed certificate or a certificate signed by a trusted authority to a PHP application using the aforementioned function, causing the application to crash or, possibly, allow the attacker to execute arbitrary code with the privileges of the user running the PHP interpreter.

tags | advisory, remote, web, arbitrary, php
systems | linux, redhat
advisories | CVE-2013-6420
MD5 | 1d1025f263f197a85f6c15110e6caa30
Red Hat Security Advisory 2013-1825-01
Posted Dec 12, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-1825-01 - PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. A memory corruption flaw was found in the way the openssl_x509_parse() function of the PHP openssl extension parsed X.509 certificates. A remote attacker could use this flaw to provide a malicious self-signed certificate or a certificate signed by a trusted authority to a PHP application using the aforementioned function, causing the application to crash or, possibly, allow the attacker to execute arbitrary code with the privileges of the user running the PHP interpreter.

tags | advisory, remote, web, arbitrary, php
systems | linux, redhat
advisories | CVE-2013-6420
MD5 | caa80df39ee7cac639460f43d375a128
Red Hat Security Advisory 2013-1815-01
Posted Dec 11, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-1815-01 - PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. A memory corruption flaw was found in the way the openssl_x509_parse() function of the PHP openssl extension parsed X.509 certificates. A remote attacker could use this flaw to provide a malicious self-signed certificate or a certificate signed by a trusted authority to a PHP application using the aforementioned function, causing the application to crash or, possibly, allow the attacker to execute arbitrary code with the privileges of the user running the PHP interpreter.

tags | advisory, remote, web, arbitrary, php
systems | linux, redhat
advisories | CVE-2013-6420
MD5 | 10326f383a4dbdb9d39d0a5c0a70887a
Red Hat Security Advisory 2013-1813-01
Posted Dec 11, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-1813-01 - PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. A memory corruption flaw was found in the way the openssl_x509_parse() function of the PHP openssl extension parsed X.509 certificates. A remote attacker could use this flaw to provide a malicious self-signed certificate or a certificate signed by a trusted authority to a PHP application using the aforementioned function, causing the application to crash or, possibly, allow the attacker to execute arbitrary code with the privileges of the user running the PHP interpreter.

tags | advisory, remote, web, arbitrary, php
systems | linux, redhat
advisories | CVE-2013-6420
MD5 | 65ac6e5468d5be58ef6d7fc25fcd939f
Red Hat Security Advisory 2013-1814-01
Posted Dec 11, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-1814-01 - PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. A memory corruption flaw was found in the way the openssl_x509_parse() function of the PHP openssl extension parsed X.509 certificates. A remote attacker could use this flaw to provide a malicious self-signed certificate or a certificate signed by a trusted authority to a PHP application using the aforementioned function, causing the application to crash or, possibly, allow the attacker to execute arbitrary code with the privileges of the user running the PHP interpreter.

tags | advisory, remote, web, arbitrary, php
systems | linux, redhat
advisories | CVE-2011-1398, CVE-2012-2688, CVE-2013-1643, CVE-2013-6420
MD5 | 7d51b442746b00b25a7484a57954a6de
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