PHP up to 5.6.24/7.0.9 var_unserializer.c deserialization

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in PHP up to 5.6.24/7.0.9 and classified as problematic. The affected element is an unknown function of the file ext/standard/var_unserializer.c. The manipulation leads to deserialization. This vulnerability is listed as CVE-2016-7124. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in PHP up to 5.6.24/7.0.9 (Programming Language Software). It has been rated as critical. This issue affects an unknown part of the file ext/standard/var_unserializer.c. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

ext/standard/var_unserializer.c in PHP before 5.6.25 and 7.x before 7.0.10 mishandles certain invalid objects, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted serialized data that leads to a (1) __destruct call or (2) magic method call.

The weakness was presented 09/12/2016 by Taoguang Chen (Website). The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2016-7124 since 09/02/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 900012 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169168 (SUSE Enterprise Linux Security Update for php53 (SUSE-SU-2016:2328-1)).

Upgrading to version 5.6.25 or 7.0.10 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (900012) and SecurityFocus (BID 92756†). See VDB-3695, VDB-5786, VDB-5794 and VDB-9021 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
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: 900012
Nessus File: 🔍

OpenVAS ID: 54857
OpenVAS Name: Ubuntu Update for php7.0 USN-3095-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍
Upgrade: PHP 5.6.25/7.0.10
Patch: github.com

Timelineinfo

09/02/2016 🔍
09/02/2016 +0 days 🔍
09/11/2016 +9 days 🔍
09/12/2016 +1 days 🔍
09/12/2016 +0 days 🔍
09/15/2022 +2194 days 🔍

Sourcesinfo

Product: php.org

Advisory: 72663
Researcher: Taoguang Chen
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-7124 (🔍)
GCVE (CVE): GCVE-0-2016-7124
GCVE (VulDB): GCVE-100-91493

OVAL: 🔍

SecurityFocus: 92756 - PHP '__wakeup()' Function Remote Code Execution Vulnerability
SecurityTracker: 1036680

See also: 🔍

Entryinfo

Created: 09/12/2016 17:53
Updated: 09/15/2022 18:22
Changes: 09/12/2016 17:53 (60), 04/15/2019 16:35 (13), 09/15/2022 18:15 (6), 09/15/2022 18:22 (1)
Complete: 🔍
Cache ID: 216::103

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