ext/intl/msgformat/msgformat_format.c in PHP before 5.6.26 and 7.x before 7.0.11 does not properly restrict the locale length provided to the Locale class in the ICU library, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a MessageFormatter::formatMessage call with a long first argument.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/bid/93008 | vdb entry |
| http://www.php.net/ChangeLog-7.php | release notes |
| https://security.gentoo.org/glsa/201611-22 | vendor advisory |
| http://www.securitytracker.com/id/1036836 | vdb entry |
| http://www.openwall.com/lists/oss-security/2016/09/15/10 | mailing list |
| https://access.redhat.com/errata/RHSA-2018:1296 | vendor advisory |
| https://bugs.php.net/bug.php?id=73007 | issue tracking exploit |
| http://www.php.net/ChangeLog-5.php | release notes |
| https://www.tenable.com/security/tns-2016-19 | |
| https://github.com/php/php-src/commit/6d55ba265637d6adf0ba7e9c9ef11187d1ec2f5b?w=1 | issue tracking patch |