Original 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.
Affected software
- PHP < 7.4.24≥ 8.0.0 < 8.0.11 Fixed in: 7.4.24, 8.0.11 exact match
Details
- Published
- 2017-05-13
- Last modified
- 2024-12-28
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
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