PHP up to 5.4.42/5.5.26/5.6.10 SSL ext/mysqlnd/mysqlnd.c access control

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in PHP up to 5.4.42/5.5.26/5.6.10. It has been declared as critical. This affects an unknown part of the file ext/mysqlnd/mysqlnd.c of the component SSL. The manipulation results in access control. This vulnerability was named CVE-2015-8838. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in PHP up to 5.4.42/5.5.26/5.6.10 (Programming Language Software). Affected is some unknown processing of the file ext/mysqlnd/mysqlnd.c of the component SSL. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

ext/mysqlnd/mysqlnd.c in PHP before 5.4.43, 5.5.x before 5.5.27, and 5.6.x before 5.6.11 uses the --ssl option to mean that SSL is optional, which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, a related issue to CVE-2015-3152.

The weakness was presented 05/16/2016 (Website). The advisory is shared for download at bugs.php.net. This vulnerability is traded as CVE-2015-8838 since 03/31/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 84673 (PHP 5.6.x < 5.6.11 Multiple Vulnerabilities (BACKRONYM)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196450 (Ubuntu Security Notification for Php5 Vulnerabilities (USN-2952-1)).

Upgrading to version 5.4.43, 5.5.27 or 5.6.11 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (84673) and SecurityFocus (BID 74398†). See VDB-75159, VDB-80328 and VDB-95552 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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: Access control
CWE: CWE-284 / CWE-266
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: 84673
Nessus Name: PHP 5.6.x < 5.6.11 Multiple Vulnerabilities (BACKRONYM)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 64737
OpenVAS Name: Ubuntu Update for php5 USN-2952-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PHP 5.4.43/5.5.27/5.6.11
Patch: 97aa752fee61fccdec361279adbfb17a3c60f3f4

Timelineinfo

07/10/2015 🔍
07/10/2015 +0 days 🔍
03/31/2016 +265 days 🔍
05/16/2016 +46 days 🔍
05/16/2016 +0 days 🔍
05/17/2016 +1 days 🔍
08/19/2022 +2285 days 🔍

Sourcesinfo

Product: php.org

Advisory: USN-2952-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8838 (🔍)
GCVE (CVE): GCVE-0-2015-8838
GCVE (VulDB): GCVE-100-87408
SecurityFocus: 74398

See also: 🔍

Entryinfo

Created: 05/17/2016 10:30
Updated: 08/19/2022 14:27
Changes: 05/17/2016 10:30 (72), 11/27/2018 10:40 (4), 08/19/2022 14:27 (6)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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