Description
Algorithmic complexity vulnerability in the multipart_buffer_headers function in main/rfc1867.c in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 allows remote attackers to cause a denial of service (CPU consumption) via crafted form data that triggers an improper order-of-growth outcome.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | php5 | 5.6.9+dfsg-0+deb8u1 | DSA-3280-1 |
| Debian 7 | php5 | 5.4.41-0+deb7u1 | DSA-3280-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | php5 | 5.5.9+dfsg-1ubuntu4.11 | USN-2658-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | php +24 | 5.4.16-36.ael7b_1 | RHSA-2015:1135 |
| RHEL 6 | php +26 | 5.3.3-46.el6_6 | RHSA-2015:1218 |
| RHEL 2 | php54-php +24 | 5.4.40-3.el6 | RHSA-2015:1219 |
| RHEL 2 | php55-php +26 | 5.5.21-4.el6 | RHSA-2015:1186 |
| RHEL 2 | rh-php56-php +27 | 5.6.5-7.el6 | RHSA-2015:1187 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | php5 | 5.5.14-30.1 | SUSE-SU-2015:1253-2, SUSE-SU-2015:1253-1 |
| SLES 11 SP2 | php53 | 5.3.17-47.1 | SUSE-SU-2016:1638-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | php5 | 5.6.28-1.1 | openSUSE-SU-2024:10344-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | php +24 | 5.4.16-36.el7_1 | ELSA-2015-1135 |
| Oracle Linux 7 | php54-php +22 | 5.4.40-3.el7 | ELSA-2015-1219 |
| Oracle Linux 7 | php54-php-imap +1 | 5.4.40-3.el6 | ELSA-2015-1219 |
| Oracle Linux 7 | php55-php +24 | 5.5.21-4.el7 | ELSA-2015-1186 |
Advisories 14
- RHSA-2015:1219 Red Hat Security Advisory: php54-php security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1218 Red Hat Security Advisory: php security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1187 Red Hat Security Advisory: rh-php56-php security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1186 Red Hat Security Advisory: php55-php security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1135 Red Hat Security Advisory: php security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-2658-1 php5 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3280-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10344-1 apache2-mod_php5-5.6.28-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1638-1 Security update for php53 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1253-1 Security update for php5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1253-2 Security update for php5 SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2015-1186 Important: php55-php security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 4, 2016
- ELSA-2015-1219 Moderate: php54-php security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 4, 2016
- ELSA-2015-1135 Important: php security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 23, 2015
References
- RHSA-2015:1187 vendor-advisory
- RHSA-2015:1186 vendor-advisory
- 74903 vdb-entry
- 1032432 vdb-entry
- RHSA-2015:1219 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
- openSUSE-SU-2015:0993 vendor-advisory
- https://bugs.php.net/bug.php?id=69364
- http://php.net/ChangeLog-5.php
- DSA-3280 vendor-advisory
- APPLE-SA-2015-08-13-2 vendor-advisory
- RHSA-2015:1135 vendor-advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763
- https://support.apple.com/kb/HT205031
- FEDORA-2015-8383 vendor-advisory
- FEDORA-2015-8281 vendor-advisory
- FEDORA-2015-8370 vendor-advisory
- RHSA-2015:1218 vendor-advisory