Apple Mac OS X up to 10.11.0 apache_mod_php deserialization

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.11

Summaryinfo

A vulnerability described as critical has been identified in Apple Mac OS X up to 10.11.0. Impacted is an unknown function of the component apache_mod_php. Such manipulation leads to deserialization. This vulnerability is documented as CVE-2015-6834. Additionally, an exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple Mac OS X up to 10.11.0 (Operating System). It has been rated as critical. Affected by this issue is an unknown code block of the component apache_mod_php. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability.

The weakness was released 10/21/2015 as HT205375 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2015-6834 since 09/08/2015. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required 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.

A public exploit has been developed by SEC Consult and been published 2 years after the advisory. The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 85933 (Fedora 21 : php-5.6.13-1.fc21 (2015-14976)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. 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 (40414), Tenable (85933), SecurityFocus (BID 76649†) and Vulnerability Center (SBV-53764†). Entries connected to this vulnerability are available at VDB-67396, VDB-67398, VDB-67420 and VDB-67631. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.2

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: SEC Consult
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 85933
Nessus Name: Fedora 21 : php-5.6.13-1.fc21 (2015-14976)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

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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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Mac OS X 10.11.1

Timelineinfo

08/27/2015 🔍
09/08/2015 +12 days 🔍
09/09/2015 +1 days 🔍
10/21/2015 +42 days 🔍
10/21/2015 +0 days 🔍
10/22/2015 +1 days 🔍
10/22/2015 +0 days 🔍
05/16/2016 +207 days 🔍
09/22/2016 +129 days 🔍
09/22/2016 +0 days 🔍
01/05/2025 +3027 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205375
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-6834 (🔍)
GCVE (CVE): GCVE-0-2015-6834
GCVE (VulDB): GCVE-100-78776

OVAL: 🔍

SecurityFocus: 76649 - PHP CVE-2015-6834 Multiple Remote Code Execution Vulnerabilities
SecurityTracker: 1033548
Vulnerability Center: 53764 - PHP Remote Code Execution due to Flaws in the __Wakeup and Unserialize Functions - CVE-2015-6834, High

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

Entryinfo

Created: 10/22/2015 11:27
Updated: 01/05/2025 05:45
Changes: 10/22/2015 11:27 (81), 02/15/2018 11:10 (13), 06/24/2022 09:43 (5), 06/24/2022 09:46 (1), 01/05/2025 05:45 (14)
Complete: 🔍
Cache ID: 216:005:103

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

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