Remote code execution in Azure DevOps Server

1) Code Injection

EUVDB-ID: #VU72231

Risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-21553

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote user can pass certain variable into the specific pipeline and execute arbitrary code on the target server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Azure DevOps Server: 2020 Update 1.1 - 2020.1.1 Patch 4

CPE2.3

• cpe:2.3:a:microsoft:azure_devops_server:2020:Update 1.1:*:*:*:*:*:*
• cpe:2.3:a:microsoft:azure_devops_server:2020:Update 1.2 Patch 1:*:*:*:*:*:*
• cpe:2.3:a:microsoft:azure_devops_server:2020:Update 1.2 Patch 2:*:*:*:*:*:*

External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21553

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.