#VU15843 Authorization bypass in Team Foundation Server - CVE-2018-8529

Vulnerability identifier: #VU15843

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-8529

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Team Foundation Server
Server applications / Application servers

Vendor: Microsoft

Description

The disclosed vulnerability allows a remote attacker to bypass authorization on the target system.

The vulnerability exists due to Team Foundation Server (TFS) does not enable basic authorization on the communication between the TFS and Search services. A remote attacker can bypass authorization to run certain commands on the Search service and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Team Foundation Server: 2018 Update 1.1 - 2018 Update 3

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8529

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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.