SB2020070221 - Multiple vulnerabilities in Apache Guacamole

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2020-9497)

The vulnerability allows a remote attacker to gain access to sensitive information on the system.

The vulnerability exists due to insufficient validation of user-supplied input of RDP static virtual channels. A remote attacker can use a specially crafted PDUs to disclose sensitive information within the memory of the guacd process handling the connection.  

2) Access of Uninitialized Pointer (CVE-ID: CVE-2020-9498)

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to the affected software mishandles pointers involved in processing data received via RDP static virtual channels. A remote attacker can use a specially crafted PDUs and execute arbitrary code on the target system.

Remediation

Install update from vendor's website.

References

• http://seclists.org/oss-sec/2020/q3/2
• http://seclists.org/oss-sec/2020/q3/3