Apple Mac OS X up to 10.11.0 CoreText Font File memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Apple Mac OS X up to 10.11.0. This impacts an unknown function of the component CoreText. The manipulation as part of Font File leads to memory corruption. This vulnerability is documented as CVE-2015-6975. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Mac OS X up to 10.11.0 (Operating System) and classified as critical. This issue affects some unknown processing of the component CoreText. The manipulation as part of a Font File leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The weakness was released 10/21/2015 by John Villamil with Yahoo Pentest Team as HT205375 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2015-6975 since 09/16/2015. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.

The vulnerability scanner Nessus provides a plugin with the ID 86603 (Apple iTunes < 12.3.1 Multiple Vulnerabilities (uncredentialed check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Peer-To-Peer File Sharing. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124198 (Apple iTunes Prior to 12.3.1 Multiple Vulnerabilities (APPLE-SA-2015-10-21-5)).

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 Tenable (86603) and Vulnerability Center (SBV-53867†). Entries connected to this vulnerability are available at VDB-78724, VDB-78725, VDB-78727 and VDB-78728. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 86603
Nessus Name: Apple iTunes < 12.3.1 Multiple Vulnerabilities (uncredentialed check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 802824
OpenVAS Name: Apple iTunes Multiple Vulnerabilities Nov15 (Windows)
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: Mac OS X 10.11.1

Timelineinfo

09/16/2015 🔍
10/21/2015 +35 days 🔍
10/21/2015 +0 days 🔍
10/21/2015 +0 days 🔍
10/22/2015 +1 days 🔍
10/22/2015 +0 days 🔍
10/23/2015 +1 days 🔍
06/24/2022 +2436 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205375
Researcher: John Villamil
Organization: Yahoo Pentest Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-6975 (🔍)
GCVE (CVE): GCVE-0-2015-6975
GCVE (VulDB): GCVE-100-78791
SecurityTracker: 1033929
Vulnerability Center: 53867 - Apple iTunes before 12.3.1 Remote Code Execution or DoS due to Memory Corruption in CoreText - CVE-2015-6975, Medium

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

Entryinfo

Created: 10/22/2015 11:24
Updated: 06/24/2022 11:53
Changes: 10/22/2015 11:24 (56), 02/17/2018 09:28 (18), 06/24/2022 11:46 (4), 06/24/2022 11:53 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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