Vulnerability identifier: #VU25867

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0758

CWE-ID: CWE-119

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 vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to a boundary error when Azure DevOps Server and Team Foundation Services improperly handle pipeline job tokens. A remote user can swap the short-term token for a long-term one, use a specially crafted application to trigger memory corruption and gain elevated privileges on the target system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Team Foundation Server: 2018 Update 1.2 - 2018 Update 3.2

Azure DevOps Server: 2019.0.1

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0758

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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.