Multiple vulnerabilities in Azure DevOps Server and Team Foundation Services

Published: 2020-03-10

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-0758 CVE-2020-0815
CWE-ID	CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Team Foundation Server Server applications / Application servers Azure DevOps Server Server applications / Application servers
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU25867

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 - Memory corruption

Exploit availability: No

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

External links

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

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.

2) Buffer overflow

EUVDB-ID: #VU25868