PHP up to 5.4.43/5.5.27/5.6.11 Exception Zend/zend_exceptions.c null pointer dereference

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 marked as problematic has been reported in PHP up to 5.4.43/5.5.27/5.6.11. The impacted element is an unknown function of the file Zend/zend_exceptions.c of the component Exception Handler. Performing a manipulation results in null pointer dereference. This vulnerability is reported as CVE-2015-8876. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in PHP up to 5.4.43/5.5.27/5.6.11 (Programming Language Software). It has been classified as critical. This affects an unknown code of the file Zend/zend_exceptions.c of the component Exception Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Zend/zend_exceptions.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 does not validate certain Exception objects, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or trigger unintended method execution via crafted serialized data.

The weakness was disclosed 05/22/2016 (Website). It is possible to read the advisory at bugs.php.net. This vulnerability is uniquely identified as CVE-2015-8876 since 05/21/2016. 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 of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 91585 (openSUSE Security Update : php5 (openSUSE-2016-703)), 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 168907 (OpenSuSE Security Update for php5 (openSUSE-SU-2016:1553-1)).

Upgrading to version 5.4.44, 5.5.28 or 5.6.12 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (91585). The entries VDB-3695, VDB-5786, VDB-5794 and VDB-9021 are pretty similar. Be aware that VulDB is the high quality 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: 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: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 91585
Nessus Name: openSUSE Security Update : php5 (openSUSE-2016-703)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 861202
OpenVAS Name: Ubuntu Update for php7.0 USN-3045-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: PHP 5.4.44/5.5.28/5.6.12

Timelineinfo

05/21/2016 🔍
05/21/2016 +0 days 🔍
05/22/2016 +1 days 🔍
05/23/2016 +1 days 🔍
06/11/2016 +19 days 🔍
06/14/2016 +3 days 🔍
08/21/2022 +2259 days 🔍

Sourcesinfo

Product: php.org

Advisory: 70121
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8876 (🔍)
GCVE (CVE): GCVE-0-2015-8876
GCVE (VulDB): GCVE-100-87567
See also: 🔍

Entryinfo

Created: 05/23/2016 10:30
Updated: 08/21/2022 14:11
Changes: 05/23/2016 10:30 (64), 12/09/2018 11:23 (12), 08/21/2022 14:07 (3), 08/21/2022 14:11 (1)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!