Apple Mac OS X up to 10.11.0 apache_mod_php memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.4$0-$5k0.00

A vulnerability classified as very critical has been found in Apple Mac OS X up to 10.11.0 (Operating System). This affects some unknown processing of the component apache_mod_php. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 10/21/2015 by Taoguang Chen as HT205375 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is uniquely identified as CVE-2015-6835 since 09/08/2015. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/24/2022). The advisory points out:

Multiple vulnerabilities existed in PHP versions prior to 5.5.29 and 5.4.45. These were addressed by updating PHP to versions 5.5.29 and 5.4.45.

The vulnerability scanner Nessus provides a plugin with the ID 89967 (Amazon Linux AMI : php54 (ALAS-2016-670)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11628 (PHP Versions Prior to 5.6.13/5.5.29/5.4.45 Multiple Vulnerabilities).

Upgrading to version 10.11.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (89967). The entries 67396, 67398, 67420 and 67724 are pretty similar.

Productinfo

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Support

  • end of life

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CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
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CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 89967
Nessus Name: Amazon Linux AMI : php54 (ALAS-2016-670)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53167
OpenVAS Name: Amazon Linux Local Check: alas-2015-601
OpenVAS File: 🔍
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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Upgrade: Mac OS X 10.11.1

Timelineinfo

09/08/2015 🔍
09/08/2015 +0 days 🔍
09/08/2015 +0 days 🔍
10/21/2015 +43 days 🔍
10/21/2015 +0 days 🔍
10/22/2015 +1 days 🔍
01/17/2016 +87 days 🔍
03/17/2016 +60 days 🔍
05/16/2016 +60 days 🔍
06/24/2022 +2230 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205375
Researcher: Taoguang Chen
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-6835 (🔍)
OVAL: 🔍

SecurityTracker: 1033548
Vulnerability Center: 55724 - Apple MacOS X Remote Code Execution due to PHP Issue - CVE-2015-6835, High
SecurityFocus: 76734 - PHP 'php_var_unserialize()' Function Use After Free Remote Code Execution Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 10/22/2015 11:27
Updated: 06/24/2022 09:51
Changes: 10/22/2015 11:27 (62), 07/05/2018 08:55 (19), 06/24/2022 09:51 (3)
Complete: 🔍

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