What is the severity of CVE-2011-0949?

CVE-2011-0949 has a medium severity rating due to the potential for denial of service through disk consumption.

How do I fix CVE-2011-0949?

Fix CVE-2011-0949 by upgrading Cisco IOS XR to version 3.8.3 or later, or 3.9.1 or later.

What systems are vulnerable to CVE-2011-0949?

CVE-2011-0949 affects Cisco IOS XR versions 3.6.x, 3.8.x prior to 3.8.3, and 3.9.x prior to 3.9.1.

What type of attack does CVE-2011-0949 enable?

CVE-2011-0949 allows remote attackers to conduct denial of service attacks by creating multiple SSHv1 connections.

Is authentication required to exploit CVE-2011-0949?

No, exploiting CVE-2011-0949 does not require authentication, allowing remote attackers to take advantage of the vulnerability.

Vulnerability/
CVE-2011-0949

high

7.8

CWE

399

31/5/2011

17/9/2024

CVE-2011-0949

First published: Tue May 31 2011(Updated: )

Cisco IOS XR 3.6.x, 3.8.x before 3.8.3, and 3.9.x before 3.9.1 does not properly remove sshd_lock files from /tmp/, which allows remote attackers to cause a denial of service (disk consumption) by making many SSHv1 connections, aka Bug ID CSCtd64417.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS XRv 9000	=3.6.0
Cisco IOS XRv 9000	=3.6.1
Cisco IOS XRv 9000	=3.6.2
Cisco IOS XRv 9000	=3.6.3
Cisco IOS XRv 9000	=3.8.0
Cisco IOS XRv 9000	=3.8.1
Cisco IOS XRv 9000	=3.8.2
Cisco IOS XRv 9000	=3.9.0

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Reference Links

http://www.cisco.com/en/US/products/products_security_advisory09186a0080b7f18f.shtml

Frequently Asked Questions

What is the severity of CVE-2011-0949?
CVE-2011-0949 has a medium severity rating due to the potential for denial of service through disk consumption.
How do I fix CVE-2011-0949?
Fix CVE-2011-0949 by upgrading Cisco IOS XR to version 3.8.3 or later, or 3.9.1 or later.
What systems are vulnerable to CVE-2011-0949?
CVE-2011-0949 affects Cisco IOS XR versions 3.6.x, 3.8.x prior to 3.8.3, and 3.9.x prior to 3.9.1.
What type of attack does CVE-2011-0949 enable?
CVE-2011-0949 allows remote attackers to conduct denial of service attacks by creating multiple SSHv1 connections.
Is authentication required to exploit CVE-2011-0949?
No, exploiting CVE-2011-0949 does not require authentication, allowing remote attackers to take advantage of the vulnerability.

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