CVE-2020-11997 Information disclosure in Apache Guacamole
Apache Guacamole fails to restrict connection history visibility, allowing users to view other users' access details and IP addresses.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-11997?
CVE-2020-11997 is a medium-severity vulnerability in Apache Guacamole, published on 19 Jan 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Apache Guacamole 1.2.0 and earlier do not consistently restrict access to connection history based on user visibility. If multiple users share access to the same connection, those users may be able to see which other users have accessed that connection, as well as the IP addresses from which that connection was accessed, even if those users do not otherwise have permission to see other users.
Weakness: CWE-276
Which versions are affected by CVE-2020-11997?
2 open source packages ship an affected version, including guacamole and guacamole-server. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
guacamole Bitnami | All versions | 1.2.0 |
guacamole-server Bitnami | All versions | 1.2.0 |
Products include Apache Guacamole.
How do I fix CVE-2020-11997?
Upgrade guacamole to 1.2.0 or later.
Is CVE-2020-11997 being exploited?
There is no known exploitation of CVE-2020-11997 in the wild and no public exploit code.
Other vulnerabilities in Apache Guacamole
- CVE-2021-43999 Improper validation of SAML responses
- CVE-2017-3158 Apache Guacamole Race Condition vulnerability
- CVE-2023-43826 Apache Guacamole: Integer overflow in handling of VNC image buffers
- CVE-2019-19603 Null dereference in n/a
- CVE-2018-1340 Missing Encryption of Sensitive Data in Apache Guacamole
Sources
Also known as BIT-guacamole-2020-11997, BIT-guacamole-server-2020-11997, UBUNTU-CVE-2020-11997.