CVE-2016-5114

MEDIUM

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

http://github.com/php/php-src/commit/2721a0148649e07ed74468f097a28899741eb58f?w=1

http://php.net/ChangeLog-5.php

http://php.net/ChangeLog-7.php

http://rhn.redhat.com/errata/RHSA-2016-2750.html

http://www.openwall.com/lists/oss-security/2016/05/29/1

http://www.search-lab.hu/about-us/news/111-some-unusual-vulnerabilities-in-the-php-engine

https://bugs.php.net/bug.php?id=70755

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731

Details

Source: MITRE

Published: 2016-08-07

Updated: 2018-01-05

Type: CWE-125

Risk Information

CVSS v2.0

Base Score: 6.4

Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:P)

Impact Score: 4.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Impact Score: 5.2

Exploitability Score: 3.9

Severity: CRITICAL