PHP up to 5.6.27/7.0.12 wddxPacket XML Document ext/wddx/wddx.c null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in PHP up to 5.6.27/7.0.12. It has been rated as problematic. Affected is an unknown function of the file ext/wddx/wddx.c of the component wddxPacket XML Document Handler. The manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2016-9934. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in PHP up to 5.6.27/7.0.12 (Programming Language Software). It has been rated as problematic. This issue affects an unknown function of the file ext/wddx/wddx.c of the component wddxPacket XML Document Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

ext/wddx/wddx.c in PHP before 5.6.28 and 7.x before 7.0.13 allows remote attackers to cause a denial of service (NULL pointer dereference) via crafted serialized data in a wddxPacket XML document, as demonstrated by a PDORow string.

The bug was discovered 12/12/2016. The weakness was shared 01/04/2017 (Website). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-2016-9934 since 12/12/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 95776 (Debian DSA-3732-1 : php5 - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175905 (Debian Security Update for php5 (DSA 3732-1)).

Upgrading to version 5.6.28 or 7.0.13 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 databases at Tenable (95776) and SecurityFocus (BID 94845†). The entries VDB-3695, VDB-5786, VDB-5794 and VDB-9021 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 95776
Nessus Name: Debian DSA-3732-1 : php5 - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-02 February-2017
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 5.6.28/7.0.13
Patch: github.com

Timelineinfo

12/12/2016 🔍
12/12/2016 +0 days 🔍
12/12/2016 +0 days 🔍
12/13/2016 +1 days 🔍
12/14/2016 +1 days 🔍
01/04/2017 +21 days 🔍
01/04/2017 +0 days 🔍
01/05/2017 +1 days 🔍
10/27/2022 +2121 days 🔍

Sourcesinfo

Product: php.org

Advisory: RHSA-2018:1296⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9934 (🔍)
GCVE (CVE): GCVE-0-2016-9934
GCVE (VulDB): GCVE-100-95039

OVAL: 🔍

SecurityFocus: 94845 - PHP 'ext/wddx/wddx.c' NULL pointer Dereference Remote Denial of Service Vulnerability
OSVDB: - CVE-2016-9934 - PHP - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 01/05/2017 12:57
Updated: 10/27/2022 16:00
Changes: 01/05/2017 12:57 (67), 07/14/2020 17:42 (15), 10/27/2022 16:00 (4)
Complete: 🔍
Cache ID: 216:AE4:103

Be aware that VulDB is the high quality source for vulnerability data.

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