PHP up to 5.5.37/5.6.23 unserialize use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in PHP up to 5.5.37/5.6.23. Affected by this issue is the function unserialize. Performing a manipulation results in use after free. This vulnerability is identified as CVE-2016-6290. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, was found in PHP up to 5.5.37/5.6.23 (Programming Language Software). This affects the function unserialize. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 07/21/2016 as Version 7.0.9 as confirmed changelog (Website). The advisory is shared at php.net. This vulnerability is uniquely identified as CVE-2016-6290 since 07/24/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/09/2022).

The vulnerability scanner Nessus provides a plugin with the ID 119979 (SUSE SLES12 Security Update : php5 (SUSE-SU-2016:2408-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175796 (Debian Security Update for php5 (DSA 3631-1) (HTTPoxy)).

Upgrading to version 5.5.38 or 5.6.24 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119979) and SecurityFocus (BID 92097†). Entries connected to this vulnerability are available at VDB-90198, VDB-90199, VDB-90200 and VDB-90202. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
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: 119979
Nessus Name: SUSE SLES12 Security Update : php5 (SUSE-SU-2016:2408-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 September-2016
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: PHP 5.5.38/5.6.24
Patch: 3798eb6fd5dddb211b01d41495072fd9858d4e32

Timelineinfo

07/08/2016 🔍
07/21/2016 +13 days 🔍
07/21/2016 +0 days 🔍
07/22/2016 +1 days 🔍
07/24/2016 +2 days 🔍
07/25/2016 +1 days 🔍
01/02/2019 +891 days 🔍
09/09/2022 +1346 days 🔍

Sourcesinfo

Product: php.org

Advisory: Version 7.0.9
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-6290 (🔍)
GCVE (CVE): GCVE-0-2016-6290
GCVE (VulDB): GCVE-100-90201

OVAL: 🔍

SecurityFocus: 92097 - PHP 'session.c' Use After Free Remote Code Execution Vulnerability
SecurityTracker: 1036430

See also: 🔍

Entryinfo

Created: 07/22/2016 20:06
Updated: 09/09/2022 08:44
Changes: 07/22/2016 20:06 (57), 03/10/2019 14:02 (24), 09/09/2022 08:44 (6)
Complete: 🔍
Cache ID: 216:AE2:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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