Information disclosure in Microsoft Azure DevOps Server and Team Foundation Server

1) Information disclosure

EUVDB-ID: #VU52066

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-27067

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Azure DevOps Server and Team Foundation Server. A remote authenticated attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Azure DevOps Server: 2019 Update 1.1 - 2019.0.1

Team Foundation Server: 2015 Update 4.2 - 2018 Update 3.2

CPE2.3

• cpe:2.3:a:microsoft:azure_devops_server:2019 Update 1.1:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:azure_devops_server:2019.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:team_foundation_server:2015 Update 4.2:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:team_foundation_server:2018 Update 1.2:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:team_foundation_server:2018 Update 3.1:*:*:*:*:*:*:*

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27067

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.