Apple MacOS X up to 10.10.2 ATS input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Apple MacOS X 10.8.5/10.9.5/10.10/10.10.1/10.10.2. Affected by this issue is some unknown functionality of the component ATS. This manipulation causes input validation. This vulnerability appears as CVE-2015-1135. In addition, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Apple MacOS X 10.8.5/10.9.5/10.10/10.10.1/10.10.2 (Operating System) and classified as critical. Affected by this vulnerability is some unknown functionality of the component ATS. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

fontd in Apple Type Services (ATS) in Apple OS X before 10.10.3 allows local users to gain privileges via unspecified vectors, a different vulnerability than CVE-2015-1131, CVE-2015-1132, CVE-2015-1133, and CVE-2015-1134.

The weakness was presented 04/08/2015 by Ian Beer (lokihardt@ASRT) with Google Project Zero as HT204659 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2015-1135 since 01/16/2015. An attack has to be approached locally. A single authentication is required for exploitation. Technical details are unknown but a public exploit is available. The advisory points out:

A local user may be able to execute arbitrary code with system privileges

A public exploit has been developed in Ruby. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 82699 (Mac OS X 10.10.x < 10.10.3 Multiple Vulnerabilities (FREAK)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 123515 (Apple Mac OS X v10.10.3 and Security Update 2015-004 Not Installed (APPLE-SA-2015-04-08-2)).

Upgrading to version 10.10.3 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 X-Force (102158), Tenable (82699), SecurityFocus (BID 73982†), SecurityTracker (ID 1032048†) and Vulnerability Center (SBV-49441†). See VDB-69184, VDB-73926, VDB-73927 and VDB-63626 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 82699
Nessus Name: Mac OS X 10.10.x < 10.10.3 Multiple Vulnerabilities (FREAK)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 Apr15
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: MacOS X 10.10.3

Timelineinfo

01/16/2015 🔍
04/08/2015 +82 days 🔍
04/08/2015 +0 days 🔍
04/08/2015 +0 days 🔍
04/08/2015 +0 days 🔍
04/10/2015 +2 days 🔍
04/10/2015 +0 days 🔍
04/10/2015 +0 days 🔍
04/12/2015 +2 days 🔍
09/22/2022 +2720 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT204659
Researcher: Ian Beer (lokihardt@ASRT)
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-1135 (🔍)
GCVE (CVE): GCVE-0-2015-1135
GCVE (VulDB): GCVE-100-74713
X-Force: 102158 - Apple Mac OS X fontd privilege escalation
SecurityFocus: 73982 - Apple Mac OS X Prior to 10.10.3 Multiple Security Vulnerabilities
SecurityTracker: 1032048 - Apple OS X Multiple Bugs Let Remote and Local Users Execute Arbitrary Code, Obtain Potentially Sensitive Information, and Deny Service
Vulnerability Center: 49441 - Apple MacOS X <10.10.3 Local Privileges Escalation due Validation Issue in fontd in Apple ATS - CVE-2015-1135, High

scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔍

Entryinfo

Created: 04/10/2015 10:22
Updated: 09/22/2022 15:31
Changes: 04/10/2015 10:22 (80), 06/25/2017 08:33 (12), 05/03/2022 10:03 (3), 09/22/2022 15:31 (1)
Complete: 🔍
Cache ID: 216::103

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

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