CVEvulnerability

CVE-2017-8923

9.8 CRITICAL Published 2017-05-12 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2017-05-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-787

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 configurations

• php php (< 7.4.24) • php php (>= 8.0.0 < 8.0.11)

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References