PHP up to 5.5.37/5.6.23/7.0.8 SNMP ext/snmp/snmp.c use after free

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-$5k0.00

Summaryinfo

A vulnerability was found in PHP up to 5.5.37/5.6.23/7.0.8 and classified as critical. This impacts an unknown function of the file ext/snmp/snmp.c of the component SNMP. Executing a manipulation can lead to use after free. This vulnerability is registered as CVE-2016-6295. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in PHP up to 5.5.37/5.6.23/7.0.8 (Programming Language Software) and classified as very critical. This vulnerability affects an unknown code of the file ext/snmp/snmp.c of the component SNMP. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 07/21/2016 as Version 7.0.9 as confirmed changelog (Website). The advisory is shared for download at php.net. This vulnerability was named CVE-2016-6295 since 07/24/2016. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (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, 5.6.24 or 7.0.9 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 92094†). Similar entries are available at VDB-90198, VDB-90199, VDB-90200 and VDB-90201. Once again VulDB remains the best source for 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
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

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 5.5.38/5.6.24/7.0.9
Patch: cab1c3b3708eead315e033359d07049b23b147a3

Timelineinfo

07/19/2016 🔍
07/21/2016 +2 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-2016-6295 (🔍)
GCVE (CVE): GCVE-0-2016-6295
GCVE (VulDB): GCVE-100-90220

OVAL: 🔍

SecurityFocus: 92094 - PHP 'snmp.c' Denial of Service Vulnerability
SecurityTracker: 1036430

See also: 🔍

Entryinfo

Created: 07/22/2016 20:06
Updated: 09/09/2022 09:04
Changes: 07/22/2016 20:06 (58), 03/10/2019 08:27 (24), 09/09/2022 09:04 (6)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!