| Name | CVE-2015-9253 |
| Description | An issue was discovered in PHP 7.3.x before 7.3.0alpha3, 7.2.x before 7.2.8, and before 7.1.20. The php-fpm master process restarts a child process in an endless loop when using program execution functions (e.g., passthru, exec, shell_exec, or system) with a non-blocking STDIN stream, causing this master process to consume 100% of the CPU, and consume disk space with a large volume of error logs, as demonstrated by an attack by a customer of a shared-hosting facility. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| php5 | source | (unstable) | (unfixed) | unimportant | ||
| php7.0 | source | (unstable) | (unfixed) | unimportant | ||
| php7.1 | source | (unstable) | 7.1.20-1 | unimportant | ||
| php7.2 | source | (unstable) | 7.2.8-1 | unimportant | ||
| php7.3 | source | (unstable) | (not affected) |
- php7.3 <not-affected> (Fixed with initial upload to unstable)
https://bugs.php.net/bug.php?id=73342
https://bugs.php.net/bug.php?id=70185
https://bugs.php.net/bug.php?id=75968
Only exploitable with malicious script