VDB-131599 · CVE-2019-5922 · BID 107200

Microsoft Teams DLL Loader Search Path untrusted search path

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Microsoft Teams. The affected element is an unknown function of the component DLL Loader. This manipulation as part of Search Path causes untrusted search path. The identification of this vulnerability is CVE-2019-5922. The attack can only be executed locally. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic was found in Microsoft Teams (Unified Communication Software) (version now known). Affected by this vulnerability is some unknown processing of the component DLL Loader. The manipulation as part of a Search Path leads to a untrusted search path vulnerability. The CWE definition for the vulnerability is CWE-426. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Untrusted search path vulnerability in The installer of Microsoft Teams allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

The bug was discovered 02/28/2019. The weakness was shared 03/12/2019 (Website). It is possible to read the advisory at jvn.jp. This vulnerability is known as CVE-2019-5922 since 01/10/2019. Attacking locally is a requirement. Required for exploitation is a single 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 07/31/2023). The attack technique deployed by this issue is T1574 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 12 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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: Untrusted search path
CWE: CWE-426
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/10/2019 🔍
02/28/2019 +49 days 🔍
03/12/2019 +12 days 🔍
03/13/2019 +1 days 🔍
07/31/2023 +1601 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: jvn.jp
Status: Not defined

CVE: CVE-2019-5922 (🔍)
GCVE (CVE): GCVE-0-2019-5922
GCVE (VulDB): GCVE-100-131599
SecurityFocus: 107200

Entryinfo

Created: 03/13/2019 07:19
Updated: 07/31/2023 16:24
Changes: 03/13/2019 07:19 (57), 05/15/2020 16:51 (1), 07/31/2023 16:24 (3)
Complete: 🔍
Cache ID: 216::103

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