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AUSCERT External Security Bulletin Redistribution
ESB-2022.6108
USN-5734-1: FreeRDP vulnerabilities
23 November 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: FreeRDP
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2022-39347 CVE-2022-39320 CVE-2022-39319
CVE-2022-39318 CVE-2022-39317 CVE-2022-39316
CVE-2022-39283 CVE-2022-39282
Original Bulletin:
https://ubuntu.com/security/notices/USN-5734-1
Comment: CVSS (Max): 9.1 CVE-2022-39319 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)
CVSS Source: [NVD], Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
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USN-5734-1: FreeRDP vulnerabilities
22 November 2022
Several security issues were fixed in FreeRDP.
Releases
o Ubuntu 22.10
o Ubuntu 22.04 LTS
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o 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
o libfreerdp-server2-2 - 2.8.1+dfsg1-0ubuntu1.1
o libfreerdp-client2-2 - 2.8.1+dfsg1-0ubuntu1.1
Ubuntu 22.04
o libfreerdp-server2-2 - 2.6.1+dfsg1-3ubuntu2.3
o libfreerdp-client2-2 - 2.6.1+dfsg1-3ubuntu2.3
Ubuntu 20.04
o libfreerdp-server2-2 - 2.2.0+dfsg1-0ubuntu0.20.04.4
o libfreerdp-client2-2 - 2.2.0+dfsg1-0ubuntu0.20.04.4
Ubuntu 18.04
o libfreerdp-server2-2 - 2.2.0+dfsg1-0ubuntu0.18.04.4
o libfreerdp-client2-2 - 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
o CVE-2022-39316
o CVE-2022-39283
o CVE-2022-39317
o CVE-2022-39282
o CVE-2022-39347
o CVE-2022-39318
o CVE-2022-39320
o CVE-2022-39319
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