CVE-2016-7412

php: Heap overflow in mysqlnd when not receiving UNSIGNED_FLAG in BIT field

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Severity

Moderate

Red Hat Product Security

4.2

CVSS 3.0

Review impact separately from score.

Published · May 30, 2016

Updated · June 28, 2026

Description

ext/mysqlnd/mysqlnd_wireprotocol.c in PHP before 5.6.26 and 7.x before 7.0.11 does not verify that a BIT field has the UNSIGNED_FLAG flag, which allows remote MySQL servers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted field metadata.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 4.2
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L

CVSS 2.0 · 5.8
AV:N/AC:M/Au:N/C:N/I:P/A:P

CWE-122 · Heap-based Buffer Overflow