Vulnerability identifier: #VU53082
Vulnerability risk: Medium
CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-354
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
Microsoft Exchange Server
Server applications /
Mail servers
Vendor: Microsoft
Description
The vulnerability allows a remote attacker to bypass integrity checks.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Microsoft Exchange Server: 2013 Cumulative Update 23 15.00.1497.002, 2019 Cumulative Update 8 15.02.0792.003 - 2019 Cumulative Update 9 15.02.0858.005, 2016 Cumulative Update 19 15.01.2176.002 - 2016 Cumulative Update 20 15.01.2242.004
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31209
http://www.zerodayinitiative.com/advisories/ZDI-21-615/
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.