CVE-2015-9253

NameCVE-2015-9253
DescriptionAn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
php5 (PTS)jessie5.6.33+dfsg-0+deb8u1vulnerable
jessie (security)5.6.38+dfsg-0+deb8u1vulnerable
php7.0 (PTS)stretch (security), stretch7.0.30-0+deb9u1vulnerable
php7.2 (PTS)buster7.2.9-1fixed
php7.3 (PTS)buster7.3.0~rc4-1fixed
sid7.3.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
php5source(unstable)(unfixed)unimportant
php7.0source(unstable)(unfixed)unimportant
php7.1source(unstable)7.1.20-1unimportant
php7.2source(unstable)7.2.8-1unimportant
php7.3source(unstable)(not affected)

Notes

- 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

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