Home / Security / Advisories / NTAP-20241227-0007

NTAP-20241227-0007 — CVE-2017-8923 PHP Vulnerability in NetApp Products

Published 2024-12-27 · Updated 2025-03-19 · Status: Final · Exploitation: Public · Severity: CRITICAL 9.8 · ONTAP affected: Yes

Official advisory: NTAP-20241227-0007 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: ONTAP | ONTAP-relevant | highest CVSS: 9.8

CVEs in this advisory

CVE-2017-8923 — CRITICAL · CVSS 9.8 · site index

What the CVE records say

CVE-2017-8923 — 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.

Impact

Successful exploitation of this vulnerability could lead to disclosure of sensitive information, addition or modification of data, or Denial of Service (DoS).

Affected products

ONTAP 9

Official fixes

ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗

References

https://bugs.php.net/bug.php?id=74577 ↗

What to do

Check the affected products listed above against the official advisory's affected-versions table — that is where the exact ONTAP 9 release, ONTAP tool, or management product versions are named.
If affected and a fixed release exists, plan the upgrade — see the ONTAP upgrade runbook.
If exploitation is listed as "active", treat remediation as urgent and review exposure (management LIFs, ONTAP S3, SnapMirror endpoints).
Harden in parallel: security hardening baseline and ransomware protection on ONTAP.