Denial of service in Microsoft Outlook



Published: 2022-08-09 | Updated: 2022-08-18
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-35742
CWE-ID CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Microsoft Outlook
Client/Desktop applications / Office applications

Microsoft Office
Client/Desktop applications / Office applications

Microsoft Office LTSC 2021
Other software / Other software solutions

Microsoft 365 Apps for Enterprise
Client/Desktop applications / Other client software

Vendor Microsoft

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU66320

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2022-35742

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Outlook when handling MIME headers. A remote attacker can send a specially crafted email to the victim and trigger heap corruption every time the email is processed by the application.

Successful exploitation may result in a perform a persistent denial-of-service condition.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Outlook: 2013 RT Service Pack 1 - 2016

Microsoft Office LTSC 2021: 32 bit editions - 64 bit editions

Microsoft Office: 2019

Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-35742
http://www.zerodayinitiative.com/advisories/ZDI-22-1074/

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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