| 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 table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| php5 (PTS) | jessie, jessie (lts) | 5.6.40+dfsg-0+deb8u21 | vulnerable |
| php7.0 (PTS) | stretch (security) | 7.0.33-0+deb9u12 | vulnerable |
| stretch (lts), stretch | 7.0.33-0+deb9u19 | vulnerable | |
| php7.3 (PTS) | buster, buster (lts) | 7.3.31-1~deb10u8 | fixed |
| buster (security) | 7.3.31-1~deb10u7 | fixed |
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