{"id":"CVE-2013-3735","aliases":["EUVD-2013-3668","GHSA-5jh5-7283-3xvx"],"status":"disputed","title":"** DISPUTED ** The Zend Engine in PHP before 5.4.16 RC1, and 5.5.0 before RC2, does not properly...","description":"The Zend Engine in PHP before 5.4.16 RC1, and 5.5.0 before RC2, does not properly determine whether a parser error occurred, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash) via a crafted function definition, as demonstrated by an attack within a shared web-hosting environment.  NOTE: the vendor's http://php.net/security-note.php page says \"for critical security situations you should be using OS-level security by running multiple web servers each as their own user id.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02832,"percentile":0.86714,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2013-05-31T21:00:00Z","modified":"2026-06-16T23:55:41Z","products":[{"vendor":"php","product":"php"}],"references":[{"url":"https://github.com/php/php-src/commit/fb58e69a84f4fde603a630d2c9df2fa3be16d846","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Patch"]},{"url":"https://github.com/php/php-src/blob/php-5.5.0RC2/NEWS","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://github.com/php/php-src/blob/php-5.4.16RC1/NEWS","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://bugs.php.net/bug.php?id=64660","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-3735"},{"url":"https://github.com/advisories/GHSA-5jh5-7283-3xvx"}],"sources":{"cve":[{"id":"CVE-2013-3735","description":"The Zend Engine in PHP before 5.4.16 RC1, and 5.5.0 before RC2, does not properly determine whether a parser error occurred, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash) via a crafted function definition, as demonstrated by an attack within a shared web-hosting environment.  NOTE: the vendor's http://php.net/security-note.php page says \"for critical security situations you should be using OS-level security by running multiple web servers each as their own user id.","status":"disputed","published":"2013-05-31T21:00:00Z","modified":"2025-01-16T20:30:29.631Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"updated_at":"2026-11-02T14:34:56.872243Z"}],"euvd":[{"id":"EUVD-2013-3668","description":"The Zend Engine in PHP before 5.4.16 RC1, and 5.5.0 before RC2, does not properly determine whether a parser error occurred, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash) via a crafted function definition, as demonstrated by an attack within a shared web-hosting environment.  NOTE: the vendor's http://php.net/security-note.php page says \"for critical security situations you should be using OS-level security by running multiple web servers each as their own user id.","status":"published","published":"2013-05-31T21:00:00Z","modified":"2025-01-16T20:30:29Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:18.077485Z"}],"ghsa":[{"id":"GHSA-5jh5-7283-3xvx","title":"** DISPUTED ** The Zend Engine in PHP before 5.4.16 RC1, and 5.5.0 before RC2, does not properly...","description":"** DISPUTED ** The Zend Engine in PHP before 5.4.16 RC1, and 5.5.0 before RC2, does not properly determine whether a parser error occurred, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash) via a crafted function definition, as demonstrated by an attack within a shared web-hosting environment.  NOTE: the vendor's http://php.net/security-note.php page says \"for critical security situations you should be using OS-level security by running multiple web servers each as their own user id.\"","status":"published","published":"2022-05-17T05:09:13Z","modified":"2025-01-16T21:31:59Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:59:35.190753Z"}],"nvd":[{"id":"CVE-2013-3735","description":"The Zend Engine in PHP before 5.4.16 RC1, and 5.5.0 before RC2, does not properly determine whether a parser error occurred, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash) via a crafted function definition, as demonstrated by an attack within a shared web-hosting environment.  NOTE: the vendor's http://php.net/security-note.php page says \"for critical security situations you should be using OS-level security by running multiple web servers each as their own user id.","status":"disputed","published":"2013-05-31T21:55:01.23Z","modified":"2026-06-16T23:55:41.74Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:29.210317Z"}]}}