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 vulnerabilities.
1) Improper access control (CVE-ID: CVE-2022-30134)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
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)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
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)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
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)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
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)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
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