Denial of service in Microsoft Windows and Windows Server - CVE-2011-1968

Vulnerability identifier: #VU3036

CSH Severity: High

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2011-1968

CWE-ID: CWE-399

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause DoS conditions on the target system.

The weakness exists due to an error in the Remote Desktop Protocol when processing a sequence of malicious packets. A remote attacker can send a specially crafted RDP packets, gain access to an object that was not properly initialized or is deleted and cause the system to stop responding and restart.

Successful exploitation of the vulnerability results in denial of service on the vulnerable system.

Note: the vulnerability was being actively exploited.

Microsoft Windows
Windows Server

Install update from vendor's website:

Windows XP Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?familyid=C07E1630-43BA-491E-BD59-9EB53105986C
Windows XP Professional x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=797A01DC-39FB-4511-832A-42D2975133F5
Windows Server 2003 Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=694BA1A6-7512-497D-A572-646A6E07B13B
Windows Server 2003 x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=308DA543-D49D-4591-8BBC-D65C524BB0AD
Windows Server 2003 with SP2 for Itanium-based Systems:
https://www.microsoft.com/downloads/details.aspx?familyid=3B459BF0-7844-4740-895C-D149D56E781F

• https://technet.microsoft.com/en-us/library/security/ms11-065

• Denial of service in Microsoft RDP