vulnerability
Ubuntu: (Multiple Advisories) (CVE-2017-8923): PHP vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | May 12, 2017 | Feb 23, 2022 | Apr 16, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
May 12, 2017
Added
Feb 23, 2022
Modified
Apr 16, 2026
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.
Solutions
ubuntu-pro-upgrade-php7-0-cgiubuntu-pro-upgrade-php7-0-cliubuntu-pro-upgrade-php7-0-fpmubuntu-upgrade-php7-2-cgiubuntu-upgrade-php7-2-cliubuntu-upgrade-php7-2-fpmubuntu-upgrade-php7-4-cgiubuntu-upgrade-php7-4-cliubuntu-upgrade-php7-4-fpmubuntu-upgrade-php8-0-cgiubuntu-upgrade-php8-0-cliubuntu-upgrade-php8-0-fpm
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.