CVE-2022-20798 Cisco Email Security Appliance and Cisco Secure Email and Web Manager External Authentication Bypass Vulnerability
Unauthenticated remote attackers can bypass authentication on Cisco ESA and Secure Email Manager devices using LDAP, gaining unauthorized access to the web management interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-20798?
CVE-2022-20798 is a critical authentication bypass vulnerability in Cisco Email Security Appliance, published on 15 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the external authentication functionality of Cisco Secure Email and Web Manager, formerly known as Cisco Security Management Appliance (SMA), and Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass authentication and log in to the web management interface of an affected device. This vulnerability is due to improper authentication checks when an affected device uses Lightweight Directory Access Protocol (LDAP) for external authentication. An attacker could exploit this vulnerability by entering a specific input on the login page of the affected device. A successful exploit could allow the attacker to gain unauthorized access to the web-based management interface of the affected device.
Weakness: CWE-287
Which versions are affected by CVE-2022-20798?
It affects 2 products.
Products include Cisco Email Security Appliance, Cisco Secure Email and Web Manager.
How do I fix CVE-2022-20798?
No fix has been published for CVE-2022-20798 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2022-20798 being exploited?
There is no known exploitation of CVE-2022-20798 in the wild and no public exploit code.
Other vulnerabilities in Cisco Email Security Appliance
- CVE-2015-6291 Denial of service in n/a
- CVE-2022-20664 Cisco Email Security Appliance and Cisco Secure Email and Web Manager Information Disclosure Vulnerability
- CVE-2022-20960 Denial of service in Cisco Secure Email
- CVE-2018-0419 Security feature bypass in Email Security Appliance (ESA)
- CVE-2016-1480 Security feature bypass in Cisco AsyncOS through WSA10.0.0-000
Sources
Also known as GHSA-c457-6cm5-j5m6.