PHP up to 5.5.27/5.6.11 Thread Safety php_open_temporary_file.c memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in PHP up to 5.5.27/5.6.11. This impacts an unknown function of the file main/php_open_temporary_file.c of the component Thread Safety. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2015-8878. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in PHP up to 5.5.27/5.6.11 (Programming Language Software). It has been rated as very critical. This issue affects some unknown processing of the file main/php_open_temporary_file.c of the component Thread Safety. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

main/php_open_temporary_file.c in PHP before 5.5.28 and 5.6.x before 5.6.12 does not ensure thread safety, which allows remote attackers to cause a denial of service (race condition and heap memory corruption) by leveraging an application that performs many temporary-file accesses.

The weakness was shared 05/22/2016 (Website). The advisory is shared at bugs.php.net. The identification of this vulnerability is CVE-2015-8878 since 05/21/2016. 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 price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/21/2022).

The vulnerability scanner Nessus provides a plugin with the ID 91397 (Debian DLA-499-1 : 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.

Upgrading to version 5.5.28 or 5.6.12 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (91397). The entries VDB-3695, VDB-5786, VDB-5794 and VDB-9021 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.7

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
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: Memory corruption
CWE: 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: 91397
Nessus Name: Debian DLA-499-1 : php5 security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 100636
OpenVAS Name: PHP Denial of Service Vulnerability - 01 - Jul16 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: PHP 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 🔍
05/31/2016 +8 days 🔍
06/01/2016 +1 days 🔍
08/21/2022 +2272 days 🔍

Sourcesinfo

Product: php.org

Advisory: 70002
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8878 (🔍)
GCVE (CVE): GCVE-0-2015-8878
GCVE (VulDB): GCVE-100-87569
See also: 🔍

Entryinfo

Created: 05/23/2016 10:31
Updated: 08/21/2022 14:20
Changes: 05/23/2016 10:31 (63), 12/09/2018 11:23 (11), 08/21/2022 14:20 (3)
Complete: 🔍
Cache ID: 216::103

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

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