SB2022080933 - Multiple vulnerabilities in Microsoft Exchange Server
Published: August 9, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Improper access control (CVE-ID: CVE-2022-30134)
The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote user can bypass implemented security restrictions and read targeted email messages.
2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-24477)
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions. A remote attacker can trick the victim to visit a specially crafted website and escalate privileges within the application.3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-24516)
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions. A remote attacker can trick the victim to visit a specially crafted website and escalate privileges within the application.
4) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-21980)
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions. A remote attacker can trick the victim into visiting a specially crafted server share or website and gain elevated privileges.
5) Improper access control (CVE-ID: CVE-2022-21979)
The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote user can bypass implemented security restrictions and read targeted email messages.
Remediation
Install update from vendor's website.
References
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2022-30134
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-24477
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-24516
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21980
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21979