Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 22.10 : FreeRDP vulnerabilities (USN-5734-1)

critical Nessus Plugin ID 168146

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 22.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5734-1 advisory.

- FreeRDP is a free remote desktop protocol library and clients. FreeRDP based clients on unix systems using `/parallel` command line switch might read uninitialized data and send it to the server the client is currently connected to. FreeRDP based server implementations are not affected. Please upgrade to 2.8.1 where this issue is patched. If unable to upgrade, do not use parallel port redirection (`/parallel` command line switch) as a workaround. (CVE-2022-39282)

- FreeRDP is a free remote desktop protocol library and clients. All FreeRDP based clients when using the `/video` command line switch might read uninitialized data, decode it as audio/video and display the result. FreeRDP based server implementations are not affected. This issue has been patched in version 2.8.1. If you cannot upgrade do not use the `/video` switch. (CVE-2022-39283)

- FreeRDP is a free remote desktop protocol library and clients. In affected versions there is an out of bound read in ZGFX decoder component of FreeRDP. A malicious server can trick a FreeRDP based client to read out of bound data and try to decode it likely resulting in a crash. This issue has been addressed in the 2.9.0 release. Users are advised to upgrade. (CVE-2022-39316)

- FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP are missing a range check for input offset index in ZGFX decoder. A malicious server can trick a FreeRDP based client to read out of bound data and try to decode it. This issue has been addressed in version 2.9.0. There are no known workarounds for this issue. (CVE-2022-39317)

- FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP are missing input validation in `urbdrc` channel. A malicious server can trick a FreeRDP based client to crash with division by zero. This issue has been addressed in version 2.9.0. All users are advised to upgrade. Users unable to upgrade should not use the `/usb` redirection switch. (CVE-2022-39318)

- FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP are missing input length validation in the `urbdrc` channel. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the `/usb` redirection switch.
(CVE-2022-39319)

- FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP may attempt integer addition on too narrow types leads to allocation of a buffer too small holding the data written. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the `/usb` redirection switch. (CVE-2022-39320)

- FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP are missing path canonicalization and base path check for `drive` channel. A malicious server can trick a FreeRDP based client to read files outside the shared directory. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the `/drive`, `/drives` or `+home-drive` redirection switch. (CVE-2022-39347)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-5734-1

Plugin Details

Severity: Critical

ID: 168146

File Name: ubuntu_USN-5734-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/23/2022

Updated: 11/24/2022

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2022-39320

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.10, p-cpe:/a:canonical:ubuntu_linux:freerdp2-dev, p-cpe:/a:canonical:ubuntu_linux:freerdp2-shadow-x11, p-cpe:/a:canonical:ubuntu_linux:freerdp2-wayland, p-cpe:/a:canonical:ubuntu_linux:freerdp2-x11, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-client2-2, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-server2-2, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-shadow-subsystem2-2, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-shadow2-2, p-cpe:/a:canonical:ubuntu_linux:libfreerdp2-2, p-cpe:/a:canonical:ubuntu_linux:libuwac0-0, p-cpe:/a:canonical:ubuntu_linux:libuwac0-dev, p-cpe:/a:canonical:ubuntu_linux:libwinpr-tools2-2, p-cpe:/a:canonical:ubuntu_linux:libwinpr2-2, p-cpe:/a:canonical:ubuntu_linux:libwinpr2-dev, p-cpe:/a:canonical:ubuntu_linux:winpr-utils

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 11/22/2022

Vulnerability Publication Date: 10/12/2022

Reference Information

CVE: CVE-2022-39282, CVE-2022-39283, CVE-2022-39316, CVE-2022-39317, CVE-2022-39318, CVE-2022-39319, CVE-2022-39320, CVE-2022-39347

USN: 5734-1