CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.6	$0-$5k	0.00

A vulnerability was found in PHP up to 5.5.36/5.6.22/7.0.7 (Programming Language Software). It has been rated as very critical. Affected by this issue is the function php_wddx_process_data of the file wddx.c of the component wddx Extension. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Double free vulnerability in the php_wddx_process_data function in wddx.c in the WDDX extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via crafted XML data that is mishandled in a wddx_deserialize call.

The weakness was presented 08/07/2016 (Website). The advisory is available at lists.apple.com. This vulnerability is handled as CVE-2016-5772 since 06/23/2016. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/13/2022).

The vulnerability scanner Nessus provides a plugin with the ID 91839 (FreeBSD : php -- multiple vulnerabilities (66d77c58-3b1d-11e6-8e82-002590263bf5)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175784 (Debian Security Update for php5 (DSA 3618-1)).

Upgrading to version 5.5.37, 5.6.23 or 7.0.8 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (91839). See 90632, 90633, 90634 and 90635 for similar entries.

Productinfo

Type

• Programming Language Software

Name

• PHP

Version

• 5.5.0
• 5.5.1
• 5.5.2
• 5.5.3
• 5.5.4
• 5.5.5
• 5.5.6
• 5.5.7
• 5.5.8
• 5.5.9
• 5.5.10
• 5.5.11
• 5.5.12
• 5.5.13
• 5.5.14
• 5.5.15
• 5.5.16
• 5.5.17
• 5.5.18
• 5.5.19
• 5.5.20
• 5.5.21
• 5.5.22
• 5.5.23
• 5.5.24
• 5.5.25
• 5.5.26
• 5.5.27
• 5.5.28
• 5.5.29
• 5.5.30
• 5.5.31
• 5.5.32
• 5.5.33
• 5.5.34
• 5.5.35
• 5.5.36
• 5.6.0
• 5.6.1
• 5.6.2
• 5.6.3
• 5.6.4
• 5.6.5
• 5.6.6
• 5.6.7
• 5.6.8
• 5.6.9
• 5.6.10
• 5.6.11
• 5.6.12
• 5.6.13
• 5.6.14
• 5.6.15
• 5.6.16
• 5.6.17
• 5.6.18
• 5.6.19
• 5.6.20
• 5.6.21
• 5.6.22
• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 91839
Nessus Name: FreeBSD : php -- multiple vulnerabilities (66d77c58-3b1d-11e6-8e82-002590263bf5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2016-728
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PHP 5.5.37/5.6.23/7.0.8
Patch: github.com

Timelineinfo

06/23/2016 🔍
06/23/2016 +0 days 🔍
06/25/2016 +2 days 🔍
06/27/2016 +2 days 🔍
08/07/2016 +41 days 🔍
08/07/2016 +0 days 🔍
08/08/2016 +1 days 🔍
09/13/2022 +2227 days 🔍

Sourcesinfo

Product: php.org

Advisory: 72340
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5772 (🔍)
OVAL: 🔍

SecurityFocus: 91398 - PHP CVE-2016-5772 Double Free Memory Corruption Vulnerability

See also: 🔍

Entryinfo

Created: 08/08/2016 15:24
Updated: 09/13/2022 09:41
Changes: 08/08/2016 15:24 (58), 03/22/2019 08:53 (22), 09/13/2022 09:37 (4), 09/13/2022 09:41 (1)
Complete: 🔍

Discussion

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