Detections
Analytics
Security Updates for Exchange (May 2021)
high Nessus Plugin ID 149393
Language:
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 security feature bypass vulnerability exists. An attacker can exploit this and bypass the security feature and perform unauthorized actions compromising the integrity of the system/application.
(CVE-2021-31207)
- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-31195, CVE-2021-31198)
- A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-31209)
Solution
Microsoft has released KB5003435 to address this issue.See Also
Plugin Details
Severity: High
ID: 149393
File Name: smb_nt_ms21_may_exchange.nasl
Version: 1.16
Type: local
Agent: windows
Family: Windows : Microsoft Bulletins
Published: 5/11/2021
Updated: 6/6/2024
Supported Sensors: Frictionless Assessment Agent, Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.0
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5.9
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2021-31198
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.5
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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:2016, cpe:/a:microsoft:exchange_server:2019
Required KB Items: SMB/MS_Bulletin_Checks/Possible
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 5/11/2021
Vulnerability Publication Date: 5/11/2021
CISA Known Exploited Vulnerability Due Dates: 11/17/2021
Exploitable With
Core Impact
Metasploit (Microsoft Exchange ProxyShell RCE)
Reference Information
CVE: CVE-2021-31195, CVE-2021-31198, CVE-2021-31207, CVE-2021-31209