CVE-2017-8923

Priority
Medium
Description
The zend_string_extend function in Zend/zend_string.h in PHP through 7.1.5
does not prevent changes to string objects that result in a negative
length, which allows remote attackers to cause a denial of service
(application crash) or possibly have unspecified other impact by leveraging
a script's use of .= with a long string.
References
Bugs
Notes
 mdeslaur> unfixed as of 2018-02-08
Package
Source: php5 (LP Ubuntu Debian)
Upstream:not-affected
Ubuntu 12.04 ESM (Precise Pangolin):deferred (2018-02-08)
Ubuntu 14.04 LTS (Trusty Tahr):deferred (2018-02-08)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:needed
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.10 (Artful Aardvark):deferred (2018-02-08)
Ubuntu 18.04 LTS (Bionic Beaver):deferred (2018-02-08)
Package
Upstream:needed
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):deferred (2018-02-08)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
More Information

Updated: 2018-02-08 14:14:18 UTC (commit 14153)