Microsoft Windows up to Server 2019 Host Guardian Service insufficiently protected credentials

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been rated as critical. Impacted is an unknown function of the component Host Guardian Service. The manipulation leads to insufficiently protected credentials. This vulnerability is traded as CVE-2020-1259. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Windows (Operating System). This issue affects an unknown function of the component Host Guardian Service. The manipulation with an unknown input leads to a insufficiently protected credentials vulnerability. Using CWE to declare the problem leads to CWE-522. The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A security feature bypass vulnerability exists when Windows Host Guardian Service improperly handles hashes recorded and logged, aka 'Windows Host Guardian Service Security Feature Bypass Vulnerability'.

The weakness was shared 06/09/2020 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The vendor cooperated in the coordination of the public release. The identification of this vulnerability is CVE-2020-1259. The attack may be initiated remotely. The successful exploitation requires a simple authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/10/2020). The attack technique deployed by this issue is T1552 according to MITRE ATT&CK. The advisory points out:

A security feature bypass vulnerability exists when Windows Host Guardian Service improperly handles hashes recorded and logged. An attacker who successfully exploited the vulnerability could tamper with the log file.

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

The entries VDB-156363, VDB-156362, VDB-156361 and VDB-156360 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.3
Vendor Vector (Microsoft): 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Insufficiently protected credentials
CWE: CWE-522
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

11/04/2019 🔍
06/09/2020 +218 days 🔍
06/09/2020 +0 days 🔍
06/10/2020 +1 days 🔍
10/23/2020 +135 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2020-1259 (🔍)
GCVE (CVE): GCVE-0-2020-1259
GCVE (VulDB): GCVE-100-156359
scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍

Entryinfo

Created: 06/10/2020 07:18
Updated: 10/23/2020 10:11
Changes: 06/10/2020 07:18 (54), 06/10/2020 07:23 (17), 10/23/2020 10:11 (1)
Complete: 🔍
Cache ID: 216::103

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

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