Improper Input Validation Affecting php:7.4/apcu-panel package, versions <0:5.1.18-1.module+el8.3.0+6678+b09f589e


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
5.27% (90th percentile)

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  • Snyk IDSNYK-RHEL8-PHP-10304122
  • published5 Jun 2025
  • disclosed12 May 2017

Introduced: 12 May 2017

CVE-2017-8923  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:8 php:7.4/apcu-panel to version 0:5.1.18-1.module+el8.3.0+6678+b09f589e or higher.
This issue was patched in RHSA-2023:2903.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php:7.4/apcu-panel package and not the php:7.4/apcu-panel package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1