Description
Integer signedness error in the simplestring_addn function in simplestring.c in xmlrpc-epi through 0.54.2, as used in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9, allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a long first argument to the PHP xmlrpc_encode_request function.
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 14 | xmlrpc-epi | 0.54.2-1.2 | — |
| Debian 13 | xmlrpc-epi | 0.54.2-1.2 | — |
| Debian 12 | xmlrpc-epi | 0.54.2-1.2 | — |
| Debian 8 | php5 | 5.6.24+dfsg-0+deb8u1 | DSA-3631-1 |
| Debian 8 | xmlrpc-epi | 0.54.2-1.1+deb8u1 | DLA-2011-1 |
| Debian 7 | php5 | 5.4.45-0+deb7u5 | DLA-628-1 |
| Debian 7 | xmlrpc-epi | 0.54.2-1+deb7u1 | DLA-569-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | php7.0 | 7.0.8-0ubuntu0.16.04.2 | USN-3045-1 |
| Ubuntu 16.04 LTS | xmlrpc-epi | 0.54.2-1.1ubuntu0.1 | USN-3059-1 |
| Ubuntu 14.04 LTS | php5 | 5.5.9+dfsg-1ubuntu4.19 | USN-3045-1 |
| Ubuntu 14.04 LTS | xmlrpc-epi | 0.54.2-1+deb7u1ubuntu0.14.04.2 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 2 | rh-php56 +2 | 2.3-1.el6 | RHSA-2016:2750 |
| RHEL 2 | rh-php56-php +27 | 5.6.25-1.el6 | RHSA-2016:2750 |
| RHEL 2 | rh-php56-php-pear | 1:1.9.5-4.el6 | RHSA-2016:2750 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | php5 | 5.5.14-73.1 | SUSE-SU-2016:2408-1 |
| SLES 12 SP1 | php7 | 7.0.7-15.1 | SUSE-SU-2016:2460-1 |
| SLES 12 | php5 | 5.5.14-73.1 | SUSE-SU-2016:2408-1 |
| SLES 12 | php7 | 7.0.7-15.1 | SUSE-SU-2016:2460-2, SUSE-SU-2016:2460-1 |
| SLES 11 SP4 | php53 | 5.3.17-79.2 | SUSE-SU-2016:2210-1 |
| SLES 11 SP2 | php5 | 5.2.14-0.7.30.89.1 | SUSE-SU-2016:2080-1 |
| SLES 11 SP2 | php53 | 5.3.17-55.1 | SUSE-SU-2016:2328-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 11 SP4 | php53 | 5.3.17-79.2 | SUSE-SU-2016:2210-1 |
Advisories 13
- RHSA-2016:2750 Red Hat Security Advisory: rh-php56 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- USN-3045-1 php5, php7.0 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-3059-1 xmlrpc-epi vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-569-1 xmlrpc-epi - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-628-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2011-1 xmlrpc-epi - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3631-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:2460-1 Security update for php7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2328-1 Security update for php53 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2408-1 Security update for php5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2460-2 Security update for php7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2210-1 Security update for php53 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2080-1 Security update for php5 SUSE / openSUSE Security Updates · May 2, 2025
References
- 92095 vdb-entry
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=e6c48213c22ed50b2b987b479fcc1ac709394caa
- APPLE-SA-2016-09-20 vendor-advisory
- GLSA-201611-22 vendor-advisory
- RHSA-2016:2750 vendor-advisory
- USN-3059-1 vendor-advisory
- https://bugs.php.net/72606
- http://php.net/ChangeLog-5.php
- 1036430 vdb-entry
- DSA-3631 vendor-advisory
- http://php.net/ChangeLog-7.php
- [oss-security] 20160724 Re: Fwd: CVE for PHP 5.5.38 issues mailing-list
- https://support.apple.com/HT207170
- [debian-lts-announce] 20191126 [SECURITY] [DLA 2011-1] xmlrpc-epi security update mailing-list