Description
Multiple integer overflows in the mbfl_strcut function in ext/mbstring/libmbfl/mbfl/mbfilter.c in PHP before 5.5.34, 5.6.x before 5.6.20, and 7.x before 7.0.5 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted mb_strcut call.
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 | 5.6.20+dfsg-0+deb8u1 | DSA-3560-1 |
| Debian 7 | php5 | 5.4.45-0+deb7u3 | DLA-499-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | php7.0 | 7.0.4-7ubuntu2.1 | USN-2984-1 |
| Ubuntu 14.04 LTS | php5 | 5.5.9+dfsg-1ubuntu4.16 | USN-2984-1 |
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 | 5.5.14-56.1 | SUSE-SU-2016:1277-1 |
| SLES 12 | php5 | 5.5.14-56.1 | SUSE-SU-2016:1277-1 |
| SLES 11 SP4 | php53 | 5.3.17-62.1 | SUSE-SU-2016:1581-1, SUSE-SU-2016:1310-1 |
| SLES 11 SP3 | php53 | 5.3.17-71.1 | SUSE-SU-2016:1581-1 |
| SLES 11 SP2 | php53 | 5.3.17-47.1 | SUSE-SU-2016:1638-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 11 SP4 | php53 | 5.3.17-62.1 | SUSE-SU-2016:1581-1, SUSE-SU-2016:1310-1 |
| SUSE OpenStack Cloud 5 | php53 | 5.3.17-71.1 | SUSE-SU-2016:1581-1 |
| SUSE Manager Proxy 2.1 | php53 | 5.3.17-71.1 | SUSE-SU-2016:1581-1 |
| SUSE Manager 2.1 | php53 | 5.3.17-71.1 | SUSE-SU-2016:1581-1 |
Advisories 8
- RHSA-2016:2750 Red Hat Security Advisory: rh-php56 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- USN-2984-1 php5, php7.0 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-499-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3560-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:1638-1 Security update for php53 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1310-1 Security update for php53 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1277-1 Security update for php5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1581-1 Security update for php53 SUSE / openSUSE Security Updates · May 2, 2025
References
- USN-2952-1 vendor-advisory
- 85991 vdb-entry
- http://www.php.net/ChangeLog-7.php
- GLSA-201611-22 vendor-advisory
- https://support.apple.com/HT206567
- RHSA-2016:2750 vendor-advisory
- DSA-3560 vendor-advisory
- USN-2952-2 vendor-advisory
- APPLE-SA-2016-05-16-4 vendor-advisory
- https://bugs.php.net/bug.php?id=71906
- http://www.php.net/ChangeLog-5.php
- https://gist.github.com/smalyshev/d8355c96a657cc5dba70
- https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=64f42c73efc58e88671ad76b6b6bc8e2b62713e1
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
- openSUSE-SU-2016:1274 vendor-advisory
- SUSE-SU-2016:1277 vendor-advisory
- [oss-security] 20160423 Re: CVE request: PHP issues fixed in 7.0.5, 5.6.20 and 5.5.34 releases mailing-list
- openSUSE-SU-2016:1373 vendor-advisory