Microsoft Windows Vista SP2 up to Server 2012 R2 OpenType Font input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Microsoft Windows Vista SP2 up to Server 2012 R2. Affected is an unknown function of the component OpenType Font Handler. Performing a manipulation results in input validation. This vulnerability is reported as CVE-2016-0121. The attack is possible to be carried out remotely. Moreover, an exploit is present. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Microsoft Windows Vista SP2 up to Server 2012 R2 (Operating System). It has been classified as critical. This affects an unknown code of the component OpenType Font Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 03/08/2016 by Mateusz Jurczyk with Google Project Zero as MS16-026 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. This vulnerability is uniquely identified as CVE-2016-0121 since 12/04/2015. 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 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 89749 (MS16-026: Security Update for Graphic Fonts to Address Remote Code Execution (3143148)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91182 (Microsoft Graphic Fonts Remote Code Execution Vulnerabilities (MS16-026)).

Applying the patch MS16-026 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 23901.

The vulnerability is also documented in the databases at Exploit-DB (39560), Tenable (89749), SecurityFocus (BID 84027†) and Vulnerability Center (SBV-57082†). Further details are available at zdnet.com. The entries VDB-81265, VDB-81266, VDB-81268 and VDB-81269 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.7

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

NVD Base Score: 8.8
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CVSSv2info

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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

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

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Nessus ID: 89749
Nessus Name: MS16-026: Security Update for Graphic Fonts to Address Remote Code Execution (3143148)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 802074
OpenVAS Name: Microsoft Graphic Fonts Multiple Vulnerabilities (3143148)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: MS16-026
TippingPoint: 🔍
Fortigate IPS: 🔍

Timelineinfo

12/04/2015 🔍
03/08/2016 +95 days 🔍
03/08/2016 +0 days 🔍
03/08/2016 +0 days 🔍
03/08/2016 +0 days 🔍
03/09/2016 +1 days 🔍
03/09/2016 +0 days 🔍
03/09/2016 +0 days 🔍
03/20/2025 +3298 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS16-026
Researcher: Mateusz Jurczyk
Organization: Google Project Zero
Status: Confirmed

CVE: CVE-2016-0121 (🔍)
GCVE (CVE): GCVE-0-2016-0121
GCVE (VulDB): GCVE-100-81267
SecurityFocus: 84027 - Microsoft Windows OpenType Fonts CVE-2016-0121 Remote Code Execution Vulnerability
SecurityTracker: 1035198
Vulnerability Center: 57082 - [MS16-026] Microsoft Windows Remote Code Execution in Windows Adobe Type Manager, Critical

scip Labs: https://www.scip.ch/en/?labs.20161215
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 03/09/2016 11:00
Updated: 03/20/2025 03:33
Changes: 03/09/2016 11:00 (74), 04/07/2017 13:50 (19), 07/09/2022 18:50 (5), 07/09/2022 18:57 (1), 03/20/2025 03:33 (14)
Complete: 🔍
Cache ID: 216::103

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