#VU60442 Input validation error in Microsoft products - CVE-2022-21965

Vulnerability identifier: #VU60442

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-21965

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Teams for iOS
Mobile applications / Apps for mobile phones
Microsoft Teams Admin Center
Mobile applications / Apps for mobile phones
Microsoft Teams for Android
Mobile applications / Apps for mobile phones

Vendor: Microsoft

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 Teams. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Teams for iOS: All versions

Microsoft Teams Admin Center: All versions

Microsoft Teams for Android: All versions

---

External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21965

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.