CVE-2013-3735
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.83%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.83% probability · 86th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- php/php
- Source
- cve@mitre.org
References
- https://bugs.php.net/bug.php?id=64660
- https://github.com/php/php-src/blob/php-5.4.16RC1/NEWS
- https://github.com/php/php-src/blob/php-5.5.0RC2/NEWS
- https://github.com/php/php-src/commit/fb58e69a84f4fde603a630d2c9df2fa3be16d846Exploit, Patch
- https://bugs.php.net/bug.php?id=64660
- https://github.com/php/php-src/blob/php-5.4.16RC1/NEWS
- https://github.com/php/php-src/blob/php-5.5.0RC2/NEWS
- https://github.com/php/php-src/commit/fb58e69a84f4fde603a630d2c9df2fa3be16d846Exploit, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.