Multiple vulnerabilities in Azure DevOps Server and Team Foundation Services



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
 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

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

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

CPE2.3 External links

https://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

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-0815

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

Azure DevOps Server: 2019 Update 1.1

CPE2.3 External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0815


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.



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