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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8.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Apple Mac OS X up to 10.11.0. The affected element is an unknown function of the component apache_mod_php. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2015-6835. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as 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. Technical details are unknown but a public exploit is available. 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 exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. 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 databases at Exploit-DB (38123), Tenable (89967), SecurityFocus (BID 76734†) and Vulnerability Center (SBV-55724†). The entries VDB-67396, VDB-67398, VDB-67420 and VDB-67724 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 9.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
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: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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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 🔍
01/05/2025 +3156 days 🔍

Sourcesinfo

Vendor: apple.com

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

CVE: CVE-2015-6835 (🔍)
GCVE (CVE): GCVE-0-2015-6835
GCVE (VulDB): GCVE-100-78777

OVAL: 🔍

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

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

Entryinfo

Created: 10/22/2015 11:27
Updated: 01/05/2025 07:01
Changes: 10/22/2015 11:27 (62), 07/05/2018 08:55 (19), 06/24/2022 09:51 (3), 01/05/2025 07:01 (23)
Complete: 🔍
Cache ID: 216::103

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

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