#VU29482 Access of Uninitialized Pointer in Guacamole - CVE-2020-9498


| Updated: 2020-07-15

Vulnerability identifier: #VU29482

Vulnerability risk: High

CVSSv4.0: 7.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2020-9498

CWE-ID: CWE-824

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Guacamole
Server applications / Remote management servers, RDP, SSH

Vendor: Apache Foundation

Description

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Guacamole: 0.8.3 - 1.1.0


External links
https://seclists.org/oss-sec/2020/q3/3


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.


Latest bulletins with this vulnerability