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Ubuntu Security Notice USN-6522-2

Ubuntu Security Notice USN-6522-2
Posted Dec 8, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6522-2 - USN-6522-1 fixed several vulnerabilities in FreeRDP. This update provides the corresponding update for Ubuntu 18.04 LTS. It was discovered that FreeRDP incorrectly handled drive redirection. If a user were tricked into connection to a malicious server, a remote attacker could use this issue to cause FreeRDP to crash, resulting in a denial of service, or possibly obtain sensitive information. It was discovered that FreeRDP incorrectly handled certain surface updates. A remote attacker could use this issue to cause FreeRDP to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, remote, denial of service, arbitrary, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-41877
SHA-256 | f2d9a5720823660f9ff2cc8301191691c6c83ad3400bdb8bbe794bf52bd69297

Ubuntu Security Notice USN-6522-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6522-2
December 07, 2023

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

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

- Ubuntu 18.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in FreeRDP.

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

Details:

USN-6522-1 fixed several vulnerabilities in FreeRDP. This update provides
the corresponding update for Ubuntu 18.04 LTS.
Original advisory details:

It was discovered that FreeRDP incorrectly handled drive redirection. If a
user were tricked into connection to a malicious server, a remote attacker
could use this issue to cause FreeRDP to crash, resulting in a denial of
service, or possibly obtain sensitive information. (CVE-2022-41877)

It was discovered that FreeRDP incorrectly handled certain surface updates.
A remote attacker could use this issue to cause FreeRDP to crash, resulting
in a denial of service, or possibly execute arbitrary code.
(CVE-2023-39352, CVE-2023-39356)

Update instructions:

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
libfreerdp2-2 2.2.0+dfsg1-0ubuntu0.18.04.4+esm2

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6522-2
https://ubuntu.com/security/notices/USN-6522-1
CVE-2022-41877, CVE-2023-39352, CVE-2023-39356

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