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Fencer Intel
high 7.5

CVE-2015-4644 json

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 be…

published 2016-05-16 10 y ago modified 2026-06-17 4 mo ago also EUVD-2015-4663

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.3%
EPSS 5.3% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

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.

Patch / fix

  • php5 Ubuntu 14.04 LTS 5.5.9+dfsg-1ubuntu4.11

ubuntu advisories UBUNTU-CVE-2015-4644

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • php55-php RHEL 2 SOFTWARE_COLLECTIONS 5.5.21-4.el6
  • php55-php RHEL 2 SOFTWARE_COLLECTIONS 5.5.21-4.el7
  • php55-php-gd RHEL 2 SOFTWARE_COLLECTIONS 5.5.21-4.el6
  • php55-php-gd RHEL 2 SOFTWARE_COLLECTIONS 5.5.21-4.el7
  • php55-php-cli RHEL 2 SOFTWARE_COLLECTIONS 5.5.21-4.el6
  • php55-php-cli RHEL 2 SOFTWARE_COLLECTIONS 5.5.21-4.el7
  • php55-php-dba RHEL 2 SOFTWARE_COLLECTIONS 5.5.21-4.el6
  • php55-php-dba RHEL 2 SOFTWARE_COLLECTIONS 5.5.21-4.el7

red hat advisories RHSA-2015:1186RHSA-2015:1187RHSA-2015:1219

  • php5 SLE Software Development Kit 12, SLE Module for Web and Scripting 12 5.5.14-30.1
  • php53 SLES 11 SP2-LTSS 5.3.17-47.1

suse advisories SUSE-SU-2016:1638-1SUSE-SU-2015:1253-2SUSE-SU-2015:1253-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-4644 updated cvss 2.6

php: NULL pointer dereference in php_pgsql_meta_data()

  • Red Hat Enterprise Linux 5 php53 Red Hat Enterprise Linux 6 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +20 more Red Hat Enterprise Linux 7 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +18 more
    affected: no fix planned “Will not fix”
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) php54-php 5.4.40-3.el6, php55-php 5.5.21-4.el6, rh-php56-php 5.6.5-7.el6, php54-php-gd 5.4.40-3.el6, php55-php-gd 5.5.21-4.el6, php54-php-cli 5.4.40-3.el6, +72 more Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) php54-php 5.4.40-3.el7, php55-php 5.5.21-4.el7, rh-php56-php 5.6.5-7.el7, php54-php-gd 5.4.40-3.el7, php55-php-gd 5.5.21-4.el7, php54-php-cli 5.4.40-3.el7, +66 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.5) php54-php 5.4.40-3.el6, php55-php 5.5.21-4.el6, rh-php56-php 5.6.5-7.el6, php54-php-gd 5.4.40-3.el6, php55-php-gd 5.5.21-4.el6, php54-php-cli 5.4.40-3.el6, +72 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6) php54-php 5.4.40-3.el6, php55-php 5.5.21-4.el6, rh-php56-php 5.6.5-7.el6, php54-php-gd 5.4.40-3.el6, php55-php-gd 5.5.21-4.el6, php54-php-cli 5.4.40-3.el6, +72 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1) php54-php 5.4.40-3.el7, php55-php 5.5.21-4.el7, rh-php56-php 5.6.5-7.el7, php54-php-gd 5.4.40-3.el7, php55-php-gd 5.5.21-4.el7, php54-php-cli 5.4.40-3.el7, +66 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) php54-php 5.4.40-3.el6, php55-php 5.5.21-4.el6, rh-php56-php 5.6.5-7.el6, php54-php-gd 5.4.40-3.el6, php55-php-gd 5.5.21-4.el6, php54-php-cli 5.4.40-3.el6, +72 more
    +1 more products
    Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) php54-php 5.4.40-3.el7, php55-php 5.5.21-4.el7, rh-php56-php 5.6.5-7.el7, php54-php-gd 5.4.40-3.el7, php55-php-gd 5.5.21-4.el7, php54-php-cli 5.4.40-3.el7, +66 more
    fixed: vendor fix RHSA-2015:1219
  • Red Hat Enterprise Linux 5 php
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.35% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.