What is the severity of CVE-2011-3273?

CVE-2011-3273 has a severity rating that can lead to a denial of service, impacting device stability.

How do I fix CVE-2011-3273?

To fix CVE-2011-3273, update Cisco IOS to a version that does not have this vulnerability.

What does CVE-2011-3273 affect?

CVE-2011-3273 affects Cisco IOS versions 15.0 through 15.1 when IPS or Zone-Based Firewall is configured.

Can CVE-2011-3273 cause crashes?

Yes, CVE-2011-3273 can cause memory consumption leading to device crashes.

What configurations trigger CVE-2011-3273?

CVE-2011-3273 is triggered by vectors that create many session flows in systems using IPS or Zone-Based Firewall.

Vulnerability/
CVE-2011-3273

high

7.8

CWE

399

3/10/2011

3/10/2022

6/8/2024

CVE-2011-3273

First published: Mon Oct 03 2011(Updated: )

Memory leak in Cisco IOS 15.0 through 15.1, when IPS or Zone-Based Firewall (aka ZBFW) is configured, allows remote attackers to cause a denial of service (memory consumption or device crash) via vectors that trigger many session creation flows, aka Bug ID CSCti79848.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS	=15.1
Cisco IOS	=15.0
Cisco IOS	=15.1xb
Cisco IOS	=15.1t
Cisco IOS	=15.0sg
Cisco IOS	=15.1gc
Cisco IOS	=15.0m
Cisco IOS	=15.1s
Cisco IOS	=15.0xa
Cisco IOS	=15.0xo
Cisco IOS	=15.1m

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2011-3273?
CVE-2011-3273 has a severity rating that can lead to a denial of service, impacting device stability.
How do I fix CVE-2011-3273?
To fix CVE-2011-3273, update Cisco IOS to a version that does not have this vulnerability.
What does CVE-2011-3273 affect?
CVE-2011-3273 affects Cisco IOS versions 15.0 through 15.1 when IPS or Zone-Based Firewall is configured.
Can CVE-2011-3273 cause crashes?
Yes, CVE-2011-3273 can cause memory consumption leading to device crashes.
What configurations trigger CVE-2011-3273?
CVE-2011-3273 is triggered by vectors that create many session flows in systems using IPS or Zone-Based Firewall.

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version/cisco ios/15.1
version/cisco ios/15.0
version/cisco ios/15.1xb
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version/cisco ios/15.1gc
version/cisco ios/15.0m
version/cisco ios/15.1s
version/cisco ios/15.0xa
version/cisco ios/15.0xo
version/cisco ios/15.1m

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