What is the severity of CVE-2016-6393?

CVE-2016-6393 has a high severity rating as it can lead to a denial of service by causing device reloads.

How do I fix CVE-2016-6393?

To fix CVE-2016-6393, upgrade Cisco IOS or IOS XE to a version that is not affected, specifically versions above those listed in the vulnerability.

What devices are affected by CVE-2016-6393?

CVE-2016-6393 affects Cisco IOS versions 12.0 through 12.4 and 15.0 through 15.6, as well as IOS XE versions 2.1 through 3.18 and 16.2.

Can CVE-2016-6393 be exploited remotely?

Yes, CVE-2016-6393 can be exploited remotely through mishandled SSH connection attempts.

What is the impact of CVE-2016-6393 on network availability?

The impact of CVE-2016-6393 on network availability is significant as it can cause devices to reload, leading to temporary outages.

Vulnerability/
CVE-2016-6393

high

7.5

CWE

399

5/10/2016

6/8/2024

CVE-2016-6393

First published: Wed Oct 05 2016(Updated: )

The AAA service in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 2.1 through 3.18 and 16.2 allows remote attackers to cause a denial of service (device reload) via a failed SSH connection attempt that is mishandled during generation of an error-log message, aka Bug ID CSCuy87667.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS	>=12.0<=12.4
Cisco IOS	>=15.0<=15.6
Cisco IOS XE Web UI	>=2.1.0<=3.18.0
Cisco IOS XE Web UI	=16.2

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2016-6393?
CVE-2016-6393 has a high severity rating as it can lead to a denial of service by causing device reloads.
How do I fix CVE-2016-6393?
To fix CVE-2016-6393, upgrade Cisco IOS or IOS XE to a version that is not affected, specifically versions above those listed in the vulnerability.
What devices are affected by CVE-2016-6393?
CVE-2016-6393 affects Cisco IOS versions 12.0 through 12.4 and 15.0 through 15.6, as well as IOS XE versions 2.1 through 3.18 and 16.2.
Can CVE-2016-6393 be exploited remotely?
Yes, CVE-2016-6393 can be exploited remotely through mishandled SSH connection attempts.
What is the impact of CVE-2016-6393 on network availability?
The impact of CVE-2016-6393 on network availability is significant as it can cause devices to reload, leading to temporary outages.

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vendor/cisco
canonical/cisco ios
version/cisco ios/12.0
version/cisco ios/12.4
version/cisco ios/15.0
version/cisco ios/15.6
canonical/cisco ios xe web ui
version/cisco ios xe web ui/2.1.0
version/cisco ios xe web ui/3.18.0
version/cisco ios xe web ui/16.2

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