CVE-2017-8923
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Php
PublishedMay 12, 2017
First seenMay 12, 2017
How to fix
Update
- php php7.4.24, 8.0.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| php php | v < 7.4.24, 8.0.0 ≤ v < 8.0.11 | 7.4.24, 8.0.11 |
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