SB2021110940 - Multiple vulnerabilities in Microsoft Exchange Server

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Main Vulnerability Database SB2021110940

SB2021110940 - Multiple vulnerabilities in Microsoft Exchange Server

Published: November 9, 2021 Updated: July 30, 2022

Security Bulletin ID SB2021110940
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Spoofing attack (CVE-ID: CVE-2021-41349)

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green


The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in Microsoft Exchange Server. A remote attacker can spoof page content.


2) Spoofing attack (CVE-ID: CVE-2021-42305)

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in Microsoft Exchange Server. A remote attacker can spoof page content.


Remediation

Install update from vendor's website.

References