Microsoft Windows up to Server 2012 R2 OpenType Font Driver Atmfd.dll access control

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows up to Server 2012 R2. It has been declared as critical. Affected by this issue is some unknown functionality in the library Atmfd.dll of the component OpenType Font Driver. Executing a manipulation as part of OpenType Font can lead to access control. This vulnerability is handled as CVE-2018-0788. It is possible to launch the attack on the local host. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as critical was found in Microsoft Windows up to Server 2012 R2 (Operating System). This vulnerability affects some unknown processing in the library Atmfd.dll of the component OpenType Font Driver. The manipulation as part of a OpenType Font leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The Windows Adobe Type Manager Font Driver (Atmfd.dll) in Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2008 SP2 and R2 SP1, and Windows Server 2012 and R2 allows an elevation of privilege vulnerability due to the way objects are handled in memory, aka "OpenType Font Driver Elevation of Privilege Vulnerability".

The bug was discovered 01/03/2018. The weakness was released 01/03/2018 by Mateusz Jurczyk with Google Project Zero as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability was named CVE-2018-0788 since 12/01/2017. The exploitation appears to be difficult. The attack needs to be approached locally. Required for exploitation is a single authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/28/2021). The MITRE ATT&CK project declares the attack technique as T1068. The advisory points out:

An elevation of privilege vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code and take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

The vulnerability scanner Nessus provides a plugin with the ID 105553 (KB4056898: Windows 8.1 and Windows Server 2012 R2 January 2018 Security Update (Meltdown)(Spectre)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91423 (Microsoft Windows Security Update (ADV180002) (Spectre/Meltdown)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (105553) and SecurityFocus (BID 102364†). Entries connected to this vulnerability are available at VDB-111347, VDB-111348, VDB-111349 and VDB-111350. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.0
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.0
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105553
Nessus Name: KB4056898: Windows 8.1 and Windows Server 2012 R2 January 2018 Security Update (Meltdown)(Spectre)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 55494
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4056898)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

12/01/2017 🔍
01/03/2018 +33 days 🔍
01/03/2018 +0 days 🔍
01/03/2018 +0 days 🔍
01/03/2018 +0 days 🔍
01/04/2018 +1 days 🔍
01/04/2018 +0 days 🔍
01/05/2018 +1 days 🔍
01/28/2021 +1119 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Mateusz Jurczyk
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0788 (🔍)
GCVE (CVE): GCVE-0-2018-0788
GCVE (VulDB): GCVE-100-111376

OVAL: 🔍

SecurityFocus: 102364 - Microsoft Windows ATMFD.dll CVE-2018-0788 Local Privilege Escalation Vulnerability
SecurityTracker: 1040092

scip Labs: https://www.scip.ch/en/?labs.20140213
See also: 🔍

Entryinfo

Created: 01/05/2018 10:07
Updated: 01/28/2021 16:36
Changes: 01/05/2018 10:07 (90), 12/28/2019 17:47 (6), 01/28/2021 16:36 (3)
Complete: 🔍
Cache ID: 216::103

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

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