Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title FreeRDP vulnerabilities
Informations
Name USN-3845-1 First vendor Publication 2018-12-12
Vendor Ubuntu Last vendor Modification 2018-12-12
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in FreeRDP.

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

Details:

Eyal Itkin discovered FreeRDP incorrectly handled certain stream encodings. A malicious server could use this issue to cause FreeRDP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applies to Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-8784, CVE-2018-8785)

Eyal Itkin discovered FreeRDP incorrectly handled bitmaps. A malicious server could use this issue to cause FreeRDP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-8786, CVE-2018-8787)

Eyal Itkin discovered FreeRDP incorrectly handled certain stream encodings. A malicious server could use this issue to cause FreeRDP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applies to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-8788)

Eyal Itkin discovered FreeRDP incorrectly handled NTLM authentication. A malicious server could use this issue to cause FreeRDP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applies to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-8789)

Update instructions:

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

Ubuntu 18.10:
libfreerdp-client2-2
2.0.0~git20180411.1.7a7b1802+dfsg1-2ubuntu0.1
libfreerdp2-2
2.0.0~git20180411.1.7a7b1802+dfsg1-2ubuntu0.1

Ubuntu 18.04 LTS:
libfreerdp-client2-2
2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1
libfreerdp2-2
2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1

Ubuntu 16.04 LTS:
libfreerdp-client1.1
1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3

Ubuntu 14.04 LTS:
libfreerdp1 1.0.2-2ubuntu1.2

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

References:
https://usn.ubuntu.com/usn/usn-3845-1
CVE-2018-8784, CVE-2018-8785, CVE-2018-8786, CVE-2018-8787,
CVE-2018-8788, CVE-2018-8789

Package Information:
https://launchpad.net/ubuntu/+source/freerdp2/2.0.0~git20180411.1.7a7b1802+dfsg1-2ubuntu0.1
https://launchpad.net/ubuntu/+source/freerdp2/2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1
https://launchpad.net/ubuntu/+source/freerdp/1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3
https://launchpad.net/ubuntu/+source/freerdp/1.0.2-2ubuntu1.2

Original Source

Url : http://www.ubuntu.com/usn/USN-3845-1

CWE : Common Weakness Enumeration

% Id Name
62 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)
12 % CWE-681 Incorrect Conversion between Numeric Types
12 % CWE-190 Integer Overflow or Wraparound (CWE/SANS Top 25)
12 % CWE-125 Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 9
Os 4
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1

Alert History

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0
1
2
Date Informations
2019-06-03 21:21:50
  • Multiple Updates
2018-12-28 21:21:29
  • Multiple Updates
2018-12-12 17:19:10
  • First insertion