Advisory Details

September 10th, 2019

Microsoft Azure DevOps Server Markdown Indexing Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-19-816
ZDI-CAN-9120

CVE ID CVE-2019-1306
CVSS SCORE 8.3, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Azure
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Azure DevOps Server. Authentication is required to exploit this vulnerability.

The specific flaw exists within the processing of markdown files during indexing of wiki content. A crafted document uploaded to a wiki can trigger the deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of LOCAL SERVICE.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1306
DISCLOSURE TIMELINE
  • 2019-08-08 - Vulnerability reported to vendor
  • 2019-09-10 - Coordinated public release of advisory
CREDIT Mikhail Shcherbakov
BACK TO ADVISORIES