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Fencer Vulns
high 7.5

CVE-2022-31626 in the critical feed json

mysqlnd/pdo password buffer overflow

published 2022-06-16 4 y ago modified 2026-09-08 2 mo ago also BIT-libphp-2022-31626 , BIT-php-2022-31626 , BIT-php-min-2022-31626 , EUVD-2022-53078

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
58.1%
EPSS 58.1% chance of exploitation in 30 days, percentile 99%
public exploits
0
none known

Summary

In PHP versions 7.4.x below 7.4.30, 8.0.x below 8.0.20, and 8.1.x below 8.1.7, when pdo_mysql extension with mysqlnd driver, if the third party is allowed to supply host to connect to and the password for the connection, password of excessive length can trigger a buffer overflow in PHP, which can lead to a remote code execution vulnerability.

Patch / fix

  • bitnami libphp 7.4.30, 8.0.20, 8.1.7
  • bitnami php 7.4.30, 8.0.20, 8.1.7
  • bitnami php-min 7.4.30, 8.0.20, 8.1.7
  • PHP Group PHP 7.4.30, 8.0.20, 8.1.7
  • php7.4 Debian 11 7.4.30-1+deb11u1

debian advisories DEBIAN-CVE-2022-31626

  • php7.2 Ubuntu 18.04 LTS 7.2.24-0ubuntu0.18.04.12
  • php7.4 Ubuntu 20.04 LTS 7.4.3-4ubuntu2.12
  • php8.1 Ubuntu 22.04 LTS 8.1.2-1ubuntu2.1
  • php7.0 Ubuntu Pro 16.04 LTS 7.0.33-0ubuntu0.16.04.16+esm4

ubuntu advisories UBUNTU-CVE-2022-31626

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

  • rh-php73-php RHEL 3 SOFTWARE_COLLECTIONS 7.3.33-1.el7
  • rh-php73-php-gd RHEL 3 SOFTWARE_COLLECTIONS 7.3.33-1.el7
  • rh-php73-php-cli RHEL 3 SOFTWARE_COLLECTIONS 7.3.33-1.el7
  • rh-php73-php-dba RHEL 3 SOFTWARE_COLLECTIONS 7.3.33-1.el7
  • rh-php73-php-dbg RHEL 3 SOFTWARE_COLLECTIONS 7.3.33-1.el7
  • rh-php73-php-fpm RHEL 3 SOFTWARE_COLLECTIONS 7.3.33-1.el7
  • rh-php73-php-gmp RHEL 3 SOFTWARE_COLLECTIONS 7.3.33-1.el7
  • rh-php73-php-pdo RHEL 3 SOFTWARE_COLLECTIONS 7.3.33-1.el7

red hat advisories RHSA-2022:5491RHSA-2022:5904RHSA-2022:5468RHSA-2022:5467RHSA-2022:5471

  • php7 SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +10 more 7.4.33-150200.3.46.2
  • php7-test openSUSE Leap 15.3 7.4.33-150200.3.46.2
  • php74 SLE Software Development Kit 12 SP5, SLE Module for Web and Scripting 12 7.4.33-1.47.2
  • php7 SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +8 more 7.2.34-150000.4.103.1
  • php7 SLE Module for Legacy 15 SP4, openSUSE Leap 15.4 7.4.33-150400.4.13.1
  • php7-fpm SLE Module for Legacy 15 SP4, openSUSE Leap 15.4 7.4.33-150400.4.13.1
  • php7-test openSUSE Leap 15.4 7.4.33-150400.4.13.2
  • php7-embed SLE Module for Package Hub 15 SP4, openSUSE Leap 15.4 7.4.33-150400.4.13.1

suse advisories SUSE-SU-2022:4069-1SUSE-SU-2022:4068-1SUSE-SU-2022:4067-1SUSE-SU-2022:3997-1SUSE-SU-2022:2303-1SUSE-SU-2022:2292-1

  • php8 openSUSE Tumbleweed 8.2.10-3.1

opensuse advisories openSUSE-SU-2024:13267-1

  • php AlmaLinux 9 8.0.13-2.el9_0
  • php-gd AlmaLinux 9 8.0.13-2.el9_0
  • php-cli AlmaLinux 9 8.0.13-2.el9_0
  • php-dba AlmaLinux 9 8.0.13-2.el9_0
  • php-dbg AlmaLinux 9 8.0.13-2.el9_0
  • php-ffi AlmaLinux 9 8.0.13-2.el9_0
  • php-fpm AlmaLinux 9 8.0.13-2.el9_0
  • php-gmp AlmaLinux 9 8.0.13-2.el9_0

almalinux advisories ALSA-2022:5904ALSA-2022:5468

  • php Rocky Linux 9 8.0.13-2.el9_0
  • php Rocky Linux 8 8.0.13-3.module+el8.6.0+989+3fbff15c
  • libzip Rocky Linux 8 1.7.3-1.module+el8.6.0+790+fc63e43f
  • php-pear Rocky Linux 8 1:1.10.13-1.module+el8.7.0+1067+0a7071cc
  • php-pear Rocky Linux 8 1:1.10.13-1.module+el8.6.0+1006+0d5a469f
  • php-pecl-rrd Rocky Linux 8 2.0.3-1.module+el8.6.0+790+fc63e43f
  • php-pecl-zip Rocky Linux 8 1.19.2-1.module+el8.6.0+790+fc63e43f
  • php-pecl-apcu Rocky Linux 8 5.1.20-1.module+el8.6.0+790+fc63e43f

rocky linux advisories RLSA-2022:5904RLSA-2022:5468RLSA-2022:5467

  • php7 Alpine 3.15, Alpine 3.14 7.4.32-r0
  • php8 Alpine 3.16, Alpine 3.14 8.0.24-r0
  • php8 Alpine 3.15 8.0.25-r0
  • php81 Alpine 3.16 8.1.7-r0
  • php81 Alpine 3.19, Alpine 3.18, Alpine 3.17 8.1.6-r2

alpine advisories ALPINE-CVE-2022-31626

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • php Arch Linux 8.1.7-1

arch linux advisories AVG-2768

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-2022-31626 updated cvss 8.8

php: password of excessive length triggers buffer overflow leading to RCE

  • Red Hat Enterprise Linux AppStream (v. 8) php 7.4.19-3.module+el8.6.0+15726+994cde98, php 8.0.13-3.module+el8.6.0+15725+0c79e7c4, libzip 1.6.1-1.module+el8.3.0+6678+b09f589e, libzip 1.7.3-1.module+el8.6.0+13671+84712317, php-gd 7.4.19-3.module+el8.6.0+15726+994cde98, php-gd 8.0.13-3.module+el8.6.0+15725+0c79e7c4, +60 more
    fixed: vendor fix RHSA-2022:5467
  • Red Hat Enterprise Linux AppStream (v. 9) php 8.0.13-2.el9_0, php-gd 8.0.13-2.el9_0, php-cli 8.0.13-2.el9_0, php-dba 8.0.13-2.el9_0, php-dbg 8.0.13-2.el9_0, php-ffi 8.0.13-2.el9_0, +18 more
    fixed: vendor fix RHSA-2022:5904
  • Red Hat Enterprise Linux AppStream EUS (v.8.4) php 7.4.6-5.module+el8.4.0+15727+276bb227, libzip 1.6.1-1.module+el8.3.0+6678+b09f589e, php-gd 7.4.6-5.module+el8.4.0+15727+276bb227, php-cli 7.4.6-5.module+el8.4.0+15727+276bb227, php-dba 7.4.6-5.module+el8.4.0+15727+276bb227, php-dbg 7.4.6-5.module+el8.4.0+15727+276bb227, +28 more
    fixed: vendor fix RHSA-2022:5471
  • Red Hat Software Collections for RHEL Workstation(v. 7) rh-php73-php 7.3.33-1.el7, rh-php73-php-gd 7.3.33-1.el7, rh-php73-php-cli 7.3.33-1.el7, rh-php73-php-dba 7.3.33-1.el7, rh-php73-php-dbg 7.3.33-1.el7, rh-php73-php-fpm 7.3.33-1.el7, +22 more Red Hat Software Collections for RHEL(v. 7) rh-php73-php 7.3.33-1.el7, rh-php73-php-gd 7.3.33-1.el7, rh-php73-php-cli 7.3.33-1.el7, rh-php73-php-dba 7.3.33-1.el7, rh-php73-php-dbg 7.3.33-1.el7, rh-php73-php-fpm 7.3.33-1.el7, +22 more
    fixed: vendor fix RHSA-2022:5491
  • 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
    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

cisa ICSA-26-027-02 updated cvss 8.8

Festo Didactic SE MES PC

  • Festo Didactic SE MES PC shipped_with_Windows_10
    affected: vendor fix

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

58.12% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.php.net https://bugs.php.net/bug.php?id=81719 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.0 AV:N/AC:M/Au:S/C:P/I:P/A:P
OSV 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami libphp
>=7.4.0, <7.4.30
>=8.0.0, <8.0.20
>=8.1.0, <8.1.7
7.4.30
8.0.20
8.1.7
bitnami php
>=7.4.0, <7.4.30
>=8.0.0, <8.0.20
>=8.1.0, <8.1.7
7.4.30
8.0.20
8.1.7
bitnami php-min
>=7.4.0, <7.4.30
>=8.0.0, <8.0.20
>=8.1.0, <8.1.7
7.4.30
8.0.20
8.1.7

Affected products

  • PHP Group PHP

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input
Technology feeds

References

Sources

Fencer Vulns 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.