CVE-2023-30576 Apache Guacamole: Use-after-free in handling of RDP audio input buffer
An attacker can execute arbitrary code with guacd privileges by exploiting a use-after-free vulnerability in the RDP audio input buffer handling.
- 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-2023-30576?
CVE-2023-30576 is a medium-severity use after free vulnerability in Apache Guacamole, published on 7 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Apache Guacamole 0.9.10 through 1.5.1 may continue to reference a freed RDP audio input buffer. Depending on timing, this may allow an attacker to execute arbitrary code with the privileges of the guacd process.
Weakness: CWE-416
Which versions are affected by CVE-2023-30576?
2 open source packages ship an affected version, including guacamole and guacamole-server. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
guacamole Bitnami | From 0.9.0 | 1.5.2 |
guacamole-server Bitnami | From 0.9.0 | 1.5.2 |
Products include Apache Guacamole.
How do I fix CVE-2023-30576?
Upgrade guacamole to 1.5.2 or later.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-30576 being exploited?
There is no known exploitation of CVE-2023-30576 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-2023-30576, BIT-guacamole-server-2023-30576, GHSA-q7pp-7w87-cjxp, UBUNTU-CVE-2023-30576.