ZDI-CAN-13595: (Pwn2Own) Microsoft Exchange Server CabUtility ExtractCab Directory Traversal Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Microsoft Exchange Server. User interaction is required to exploit this vulnerability. The specific flaw exists within the parsing of CAB files. When handling filenames specified within a CAB file, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of SYSTEM.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Exchange |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-CAN-13595?
The severity of ZDI-CAN-13595 is critical due to its potential to allow arbitrary code execution.
How do I fix ZDI-CAN-13595?
To fix ZDI-CAN-13595, ensure that your Microsoft Exchange Server is updated to the latest security patches provided by Microsoft.
Who is affected by ZDI-CAN-13595?
ZDI-CAN-13595 affects installations of Microsoft Exchange Server that handle CAB files.
What type of attack is ZDI-CAN-13595 associated with?
ZDI-CAN-13595 is associated with network-adjacent attacks requiring user interaction to exploit the vulnerability.
What specific component is vulnerable in ZDI-CAN-13595?
The specific component that is vulnerable in ZDI-CAN-13595 is the parsing of CAB file filenames.
- agent/references
- agent/softwarecombine
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-21-826
- alias/ZDI-CAN-13595
- alias/CVE-2021-31206
- agent/software-canonical-lookup
- agent/title
- agent/severity
- agent/description
- agent/event
- agent/source
- agent/tags
- agent/type
- vendor/microsoft
- canonical/microsoft exchange