Description
sapi/fpm/fpm/fpm_log.c in PHP before 5.5.31, 5.6.x before 5.6.17, and 7.x before 7.0.2 misinterprets the semantics of the snprintf return value, which allows attackers to obtain sensitive information from process memory or cause a denial of service (out-of-bounds read and buffer overflow) via a long string, as demonstrated by a long URI in a configuration with custom REQUEST_URI logging.
References (8)
Core 8
Core References
Vendor Advisory vendor-advisory
x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2016-2750.html
Patch, Release Notes x_refsource_confirm
http://php.net/ChangeLog-5.php
Release Notes mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/05/29/1
Patch, Release Notes x_refsource_confirm
http://php.net/ChangeLog-7.php
Patch x_refsource_confirm
http://github.com/php/php-src/commit/2721a0148649e07ed74468f097a28899741eb58f?w=1
Patch, Third Party Advisory x_refsource_misc
http://www.search-lab.hu/about-us/news/111-some-unusual-vulnerabilities-in-the-php-engine
Exploit x_refsource_confirm
https://bugs.php.net/bug.php?id=70755
Vendor Advisory x_refsource_confirm
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
Scores
CVSS v3
9.1
EPSS
0.0102
EPSS Percentile
77.4%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Details
CWE
CWE-119
CWE-125
Status
published
Products (20)
php/php
5.6.0 alpha1 (9 CPE variants)
php/php
5.6.1
php/php
5.6.2
php/php
5.6.3
php/php
5.6.4
php/php
5.6.5
php/php
5.6.6
php/php
5.6.7
php/php
5.6.8
php/php
5.6.9
... and 10 more
Published
Aug 07, 2016
Tracked Since
Feb 18, 2026