CVE-2016-5093
The get_icu_value_internal function in ext/intl/locale/locale_methods.c in PHP before 5.5.36, 5.6.x before 5.6.22, and 7.x before 7.0.7 does not ensure the presence of a '\0' character, which allows remote attackers to cause a denial of service…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.49%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The get_icu_value_internal function in ext/intl/locale/locale_methods.c in PHP before 5.5.36, 5.6.x before 5.6.22, and 7.x before 7.0.7 does not ensure the presence of a '\0' character, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a crafted locale_get_primary_language call.
- CVSS 3.0
- 8.6 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- EPSS
- 5.49% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- php/php
- Source
- cve@mitre.org
References
- http://php.net/ChangeLog-5.phpPatch, Release Notes
- http://php.net/ChangeLog-7.phpPatch, Release Notes
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.debian.org/security/2016/dsa-3602
- http://www.openwall.com/lists/oss-security/2016/05/26/3Release Notes
- http://www.securityfocus.com/bid/90946
- https://bugs.php.net/bug.php?id=72241Exploit
- https://github.com/php/php-src/commit/97eff7eb57fc2320c267a949cffd622c38712484?w=1Patch
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
- http://php.net/ChangeLog-5.phpPatch, Release Notes
- http://php.net/ChangeLog-7.phpPatch, Release Notes
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.debian.org/security/2016/dsa-3602
- http://www.openwall.com/lists/oss-security/2016/05/26/3Release Notes
- http://www.securityfocus.com/bid/90946
- https://bugs.php.net/bug.php?id=72241Exploit
- https://github.com/php/php-src/commit/97eff7eb57fc2320c267a949cffd622c38712484?w=1Patch
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.