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CVE-2016-5114

Date: August 7, 2016

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.

Language: C

Severity Score

Related Resources (12)

https://nvd.nist.gov/vuln/detail/CVE-2016-5114
http://rhn.redhat.com/errata/RHSA-2016-2750.html
http://www.search-lab.hu/about-us/news/111-some-unusual-vulnerabilities-in-the-php-engine
https://bugs.php.net/bug.php?id=70755
http://www.openwall.com/lists/oss-security/2016/05/29/1
http://github.com/php/php-src/commit/2721a0148649e07ed74468f097a28899741eb58f?w=1
https://access.redhat.com/security/cve/CVE-2016-5114
http://php.net/ChangeLog-5.php
http://php.net/ChangeLog-7.php
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-5114
https://www.mend.io/vulnerability-database/CVE-2016-5114

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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