Description
In PHP before 5.6.31, 7.x before 7.0.21, and 7.1.x before 7.1.7, a stack-based buffer overflow in the zend_ini_do_op() function in Zend/zend_ini_parser.c could cause a denial of service or potentially allow executing code. NOTE: this is only relevant for PHP applications that accept untrusted input (instead of the system's php.ini file) for the parse_ini_string or parse_ini_file function, e.g., a web application for syntax validation of php.ini directives.
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 9 | php7.0 | 7.0.27-0+deb9u1 | DSA-4080-1 |
| Debian 8 | php5 | 5.6.33+dfsg-0+deb8u1 | DSA-4081-1 |
| Debian 7 | php5 | 5.4.45-0+deb7u10 | DLA-1066-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | php7.0 | 7.0.22-0ubuntu0.16.04.1 | USN-3382-1 |
| Ubuntu 14.04 LTS | php5 | 5.5.9+dfsg-1ubuntu4.22 | USN-3382-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | rh-php70-php +29 | 7.0.27-1.el6 | RHSA-2018:1296 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | php5 | 5.5.14-109.5.1 | SUSE-SU-2017:2317-1 |
| SLES 12 SP3 | php7 | 7.0.7-50.9.2 | SUSE-SU-2017:2303-1 |
| SLES 12 SP2 | php5 | 5.5.14-109.5.1 | SUSE-SU-2017:2317-1 |
| SLES 12 SP2 | php7 | 7.0.7-50.9.2 | SUSE-SU-2017:2303-1 |
| SLES 12 | php5 | 5.5.14-109.5.1 | SUSE-SU-2017:2317-1 |
| SLES 12 | php7 | 7.0.7-50.9.2 | SUSE-SU-2017:2303-1 |
| SLES 11 SP4 | php53 | 5.3.17-112.5.1 | SUSE-SU-2017:2522-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 11 SP4 | php53 | 5.3.17-112.5.1 | SUSE-SU-2017:2522-1 |
Advisories 8
- RHSA-2018:1296 Red Hat Security Advisory: rh-php70-php security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3382-1 php5, php7.0 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4080-1 php7.0 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4081-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1066-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:2522-1 Security update for php53 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2303-1 Security update for php7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2317-1 Security update for php5 SUSE / openSUSE Security Updates · May 2, 2025
References
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=05255749139b3686c8a6a58ee01131ac0047465e
- RHSA-2018:1296 vendor-advisory
- https://security.netapp.com/advisory/ntap-20180112-0001/
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=5f8380d33e648964d2d5140f329cf2d4c443033c
- DSA-4081 vendor-advisory
- DSA-4080 vendor-advisory
- https://bugs.php.net/bug.php?id=74603
- 99489 vdb-entry
- GLSA-201709-21 vendor-advisory