SB2023091264 - Multiple vulnerabilities in Microsoft Azure DevOps Server

Description

This security bulletin contains information about 2 vulnerabilities.

1) Deserialization of Untrusted Data (CVE-ID: CVE-2023-38155)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insecure input validation when processing serialized data within the MachinePropertyBag class. A local user can pass specially crafted data to the server and execute arbitrary code with elevated privileges.

2) Input validation error (CVE-ID: CVE-2023-33136)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 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:Green

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insufficient validation of user-supplied input in Azure DevOps Server. A remote user can pass specially crafted input to the application and execute arbitrary code on the system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-38155
• https://www.zerodayinitiative.com/advisories/ZDI-23-1403/
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-33136