JetBrains TeamCity up to 2020.2.3 unrestricted upload

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CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability, which was classified as critical, has been found in JetBrains TeamCity up to 2020.2.3. Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-434. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In JetBrains TeamCity before 2020.2.4, insufficient checks during file uploading were made.

The weakness was disclosed 08/07/2021. The advisory is shared for download at blog.jetbrains.com. This vulnerability is handled as CVE-2021-37547 since 07/26/2021. The exploitation is known to be easy. The attack can only be done within the local network. The successful exploitation needs a simple authentication. There are neither technical details nor an exploit publicly available.

Upgrading to version 2020.2.4 eliminates this vulnerability.

Productinfoedit

Vendor

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CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2infoedit

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

Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-434
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: TeamCity 2020.2.4

Timelineinfoedit

07/26/2021 CVE assigned
08/07/2021 +12 days Advisory disclosed
08/07/2021 +0 days VulDB entry created
08/10/2021 +3 days VulDB last update

Sourcesinfoedit

Advisory: blog.jetbrains.com
Status: Confirmed

CVE: CVE-2021-37547 (🔒)

Entryinfoedit

Created: 08/07/2021 06:25 AM
Updated: 08/10/2021 02:37 PM
Changes: (2) source_cve_assigned source_cve_nvd_summary
Complete: 🔍

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