Detections
Analytics
Security Updates for Exchange (November 2021) (Remote)
high Nessus Plugin ID 155962
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Synopsis
The Microsoft Exchange Server installed on the remote host is affected by multiple vulnerabilities.Description
The Microsoft Exchange Server installed on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:- A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-41349, CVE-2021-42305)
- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-42321)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Microsoft has released KB5007409 to address this issue.See Also
Plugin Details
Severity: High
ID: 155962
File Name: smb_nt_ms21_nov_exchange_remote.nasl
Version: 1.7
Type: remote
Agent: windows
Family: Windows
Published: 12/9/2021
Updated: 3/6/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 8.9
CVSS v2
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.7
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P
CVSS Score Source: CVE-2021-42321
CVSS v3
Risk Factor: High
Base Score: 8.8
Temporal Score: 8.4
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:microsoft:exchange_server
Required KB Items: installed_sw/Exchange Server
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 11/9/2021
Vulnerability Publication Date: 11/9/2021
CISA Known Exploited Vulnerability Due Dates: 12/1/2021
Exploitable With
Core Impact
Metasploit (Microsoft Exchange Server ChainedSerializationBinder RCE)