CVE-2015-4644

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-05-16 · updated 2026-06-17

Description

The php_pgsql_meta_data function in pgsql.c in the PostgreSQL (aka pgsql) extension in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 does not validate token extraction for table names, which might allow remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted name. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1352.

Affected products

PHP: through 5.4.41; 5.5.0, 5.5.1, 5.5.2, 5.5.3, 5.5.4, 5.5.5 (+30)
Red Hat Enterprise Linux: 6.0, 7.0

References

http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=2cc4e69cc6d8dbc4b3568ad3dd583324a7c11d64
http://openwall.com/lists/oss-security/2015/06/18/6
http://php.net/ChangeLog-5.php
http://rhn.redhat.com/errata/RHSA-2015-1186.html
http://rhn.redhat.com/errata/RHSA-2015-1187.html
http://www.debian.org/security/2015/dsa-3344
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.securityfocus.com/bid/75292
http://www.securitytracker.com/id/1032709
https://bugs.php.net/bug.php?id=69667
https://security.gentoo.org/glsa/201606-10
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=2cc4e69cc6d8dbc4b3568ad3dd583324a7c11d64

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