Description
In PHP before 5.6.31, 7.x before 7.0.17, and 7.1.x before 7.1.3, remote attackers could cause a CPU consumption denial of service attack by injecting long form variables, related to main/php_variables.c.
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 | 5.6.33+dfsg-0+deb8u1 | DSA-4081-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | php7 | 7.0.7-50.9.2 | SUSE-SU-2017:2303-1 |
| SLES 12 SP2 | php7 | 7.0.7-50.9.2 | SUSE-SU-2017:2303-1 |
| SLES 12 | php7 | 7.0.7-50.9.2 | SUSE-SU-2017:2303-1 |
Advisories 3
- DSA-4081-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:2303-1 Security update for php7 SUSE / openSUSE Security Updates · Feb 4, 2026
- VDE-2023-009 ads-tec: Multiple Vulnerabilities in IRF1000, IRF2000 and IRF3000 CERT@VDE · May 8, 2023
References
- https://github.com/php/php-src/commit/0f8cf3b8497dc45c010c44ed9e96518e11e19fc3
- http://openwall.com/lists/oss-security/2017/07/10/6
- https://www.tenable.com/security/tns-2017-12
- https://bugs.php.net/bug.php?id=73807
- https://github.com/php/php-src/commit/a15bffd105ac28fd0dd9b596632dbf035238fda3
- http://php.net/ChangeLog-5.php
- https://security.netapp.com/advisory/ntap-20180112-0001/
- 99601 vdb-entry
- DSA-4081 vendor-advisory
- http://php.net/ChangeLog-7.php