Improper Validation of Array Index in FreeRDP - CVE-2020-11041

Vulnerability identifier: #VU28507

CSH Severity: Low

CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-11041

CWE-ID: CWE-129

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote user to perform a denal of service (DoS) attack.

The vulnerability exists due to unchecked read of array offset in "rdpsnd_recv_wave2_pdu". A remote administrator can crash the client instance followed by no or distorted sound or a session disconnect.

FreeRDP
freerdp (Red Hat package)
vinagre (Red Hat package)
freerdp
freerdp-libs
libwinpr
libwinpr-devel
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Power, little endian
Anolis OS
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Opensuse

Install updates from vendor's website.

FreeRDP - update to 2.1.0
freerdp (Red Hat package) - addressed in versions 2.1.1-1.el8, 2.1.1-2.el7
vinagre (Red Hat package) - update to 3.22.0-23.el8
freerdp - update to 2.2.0-6
freerdp-libs - update to 2.2.0-6
libwinpr - update to 2.2.0-6
libwinpr-devel - update to 2.2.0-6

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-w67c-26c4-2h9w

• Multiple vulnerabilities in FreeRDP
• OpenSUSE Linux update for freerdp
• Red Hat Enterprise Linux 7 update for freerdp
• Red Hat Enterprise Linux 8 update for freerdp and vinagre
• Anolis OS update for freerdp (Anolis OS 8.4)