Apache · Apache Guacamole · CVE-2023-43826
**Name of the Vulnerable Software and Affected Versions**
Apache Guacamole versions 1.5.3 and older
**Description**
The issue arises from inconsistent handling of values received from a VNC server, which can lead to integer overflow. If a user connects to a malicious or compromised VNC server, specially-crafted data could result in memory corruption, possibly allowing arbitrary code to be executed with the privileges of the running guacd process. Approximately 29,620 results are mainly distributed in the United States, Germany, and other countries.
**Recommendations**
For Apache Guacamole versions 1.5.3 and older, upgrade to version 1.5.4, which fixes this issue. As a temporary workaround, consider restricting access to the VNC server to minimize the risk of exploitation. Avoid using potentially malicious or compromised VNC servers until the issue is resolved.