#VU18505 Server-Side Request Forgery (SSRF) in Team Foundation Server and Azure DevOps Server - CVE-2019-0971

Vulnerability identifier: #VU18505

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-0971

CWE-ID: CWE-918

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Team Foundation Server
Server applications / Application servers
Azure DevOps Server
Server applications / Application servers

Vendor: Microsoft

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted HTTP request to the Repos API and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Team Foundation Server: 2018 Update 3.2 Patch 1 - 2018 Update 3.2

Azure DevOps Server: 2019 Patch 1 - 2019.0.1 RC

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0971

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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