CVE-2016-5114
9.1
CRITICAL · CVSS 3.0 · EPSS 4.5% (pctl 91)
In your normal cycle
Critical by CVSS (9.1), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.1 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| EPSS | 4.49% — more likely to be exploited than 91% of all CVEs |
| Weakness | CWE-119 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2016-08-07 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| php | php |
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
- 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
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