Vulnerability Monitor

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CVE-2016-7398

A type confusion vulnerability in the merge_param() function of php_http_params.c in PHP's pecl-http extension 3.1.0beta2 (PHP 7) and earlier as well as 2.6.0beta2 (PHP 5) and earlier allows attackers to crash PHP and possibly execute arbitrary code via crafted HTTP requests.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from php organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2019-09-06T19:15:11.387

Last Modified

2024-11-21T02:57:55.110

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-704

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	php	ext-http	≤ 2.5.6	Yes
Application	php	ext-http	≤ 3.0.1	Yes
Application	php	ext-http	2.6.0	Yes
Application	php	ext-http	2.6.0	Yes
Application	php	ext-http	2.6.0	Yes
Application	php	ext-http	2.6.0	Yes
Application	php	ext-http	3.1.0	Yes
Application	php	ext-http	3.1.0	Yes
Application	php	ext-http	3.1.0	Yes
Application	php	ext-http	3.1.0	Yes

References

https://bugs.php.net/bug.php?id=73055 Exploit, Mailing List, Vendor Advisory ([email protected])
https://bugs.php.net/bug.php?id=73055&edit=1 Exploit, Vendor Advisory ([email protected])
https://github.com/m6w6/ext-http/commit/17137d4ab1ce81a2cee0fae842340a344ef3da83 Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2019/09/msg00022.html ([email protected])
https://bugs.php.net/bug.php?id=73055 Exploit, Mailing List, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.php.net/bug.php?id=73055&edit=1 Exploit, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/m6w6/ext-http/commit/17137d4ab1ce81a2cee0fae842340a344ef3da83 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2019/09/msg00022.html (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For php's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.