[USN-5734-1] FreeRDP vulnerabilities

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-5734-1
November 22, 2022

freerdp2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in FreeRDP.

Software Description:
- freerdp2: RDP client for Windows Terminal Services

Details:

It was discovered that FreeRDP incorrectly handled certain data lenghts. A
malicious server could use this issue to cause FreeRDP clients to crash,
resulting in a denial of service, or possibly obtain sensitive information.
This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu
22.04 LTS. (CVE-2022-39282, CVE-2022-39283)

It was discovered that FreeRDP incorrectly handled certain data lenghts. A
malicious server could use this issue to cause FreeRDP clients to crash,
resulting in a denial of service, or possibly obtain sensitive information.
(CVE-2022-39316, CVE-2022-39317, CVE-2022-39318, CVE-2022-39319,
CVE-2022-39320)

It was discovered that FreeRDP incorrectly handled certain path checks. A
malicious server could use this issue to cause FreeRDP clients to read
files outside of the shared directory. (CVE-2022-39347)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.10:
   libfreerdp-client2-2            2.8.1+dfsg1-0ubuntu1.1
   libfreerdp-server2-2            2.8.1+dfsg1-0ubuntu1.1

Ubuntu 22.04 LTS:
   libfreerdp-client2-2            2.6.1+dfsg1-3ubuntu2.3
   libfreerdp-server2-2            2.6.1+dfsg1-3ubuntu2.3

Ubuntu 20.04 LTS:
   libfreerdp-client2-2            2.2.0+dfsg1-0ubuntu0.20.04.4
   libfreerdp-server2-2            2.2.0+dfsg1-0ubuntu0.20.04.4

Ubuntu 18.04 LTS:
   libfreerdp-client2-2            2.2.0+dfsg1-0ubuntu0.18.04.4
   libfreerdp-server2-2            2.2.0+dfsg1-0ubuntu0.18.04.4

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-5734-1
   CVE-2022-39282, CVE-2022-39283, CVE-2022-39316, CVE-2022-39317,
   CVE-2022-39318, CVE-2022-39319, CVE-2022-39320, CVE-2022-39347

Package Information:
   https://launchpad.net/ubuntu/+source/freerdp2/2.8.1+dfsg1-0ubuntu1.1
   https://launchpad.net/ubuntu/+source/freerdp2/2.6.1+dfsg1-3ubuntu2.3
   https://launchpad.net/ubuntu/+source/freerdp2/2.2.0+dfsg1-0ubuntu0.20.04.4
   https://launchpad.net/ubuntu/+source/freerdp2/2.2.0+dfsg1-0ubuntu0.18.04.4
-------------- next part --------------
A non-text attachment was scrubbed...
Name: OpenPGP_signature
Type: application/pgp-signature
Size: 833 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20221122/d1de1364/attachment.sig>