CVE-2011-4006: Input Validation
First published: Wed May 02 2012(Updated: )
The ESMTP inspection feature on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.2 through 8.5 allows remote attackers to cause a denial of service (CPU consumption) via an unspecified closing sequence, aka Bug ID CSCtt32565.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Adaptive Security Appliance Software | =8.2\(1\) | |
| Cisco Adaptive Security Appliance Software | =8.2\(2\) | |
| Cisco Adaptive Security Appliance Software | =8.2\(3\) | |
| Cisco Adaptive Security Appliance Software | =8.2\(3.9\) | |
| Cisco Adaptive Security Appliance Software | =8.2\(4\) | |
| Cisco Adaptive Security Appliance Software | =8.2\(4.1\) | |
| Cisco Adaptive Security Appliance Software | =8.2\(4.4\) | |
| Cisco Adaptive Security Appliance Software | =8.2\(5\) | |
| Cisco Adaptive Security Appliance Software | =8.2.1 | |
| Cisco Adaptive Security Appliance Software | =8.2.2 | |
| Cisco Adaptive Security Appliance Software | =8.2.2-interim | |
| Cisco Adaptive Security Appliance Software | =8.2.3 | |
| Cisco Adaptive Security Appliance Software | =8.3\(1\) | |
| Cisco Adaptive Security Appliance Software | =8.3\(2\) | |
| Cisco Adaptive Security Appliance Software | =8.3.1 | |
| Cisco Adaptive Security Appliance Software | =8.3.1-interim | |
| Cisco Adaptive Security Appliance Software | =8.3.2 | |
| Cisco Adaptive Security Appliance Software | =8.4 | |
| Cisco Adaptive Security Appliance Software | =8.4\(1\) | |
| Cisco Adaptive Security Appliance Software | =8.4\(1.11\) | |
| Cisco Adaptive Security Appliance Software | =8.4\(2\) | |
| Cisco Adaptive Security Appliance Software | =8.4\(2.11\) | |
| Cisco Adaptive Security Appliance Software | =8.5 | |
| Cisco Adaptive Security Appliance Software | =8.5\(1\) | |
| Cisco Adaptive Security Appliance Software | =8.5\(1.4\) | |
| Cisco Adaptive Security Appliance 5500 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2011-4006?
CVE-2011-4006 has a severity rating that indicates it can cause a denial of service due to excessive CPU consumption.
How do I fix CVE-2011-4006?
To address CVE-2011-4006, upgrade your Cisco Adaptive Security Appliance software to a version that is not affected, such as versions above 8.5.
Which devices are affected by CVE-2011-4006?
CVE-2011-4006 affects Cisco Adaptive Security Appliances 5500 series running software versions 8.2 through 8.5.
What type of attack does CVE-2011-4006 involve?
CVE-2011-4006 involves a denial of service attack that exploits a vulnerability in the ESMTP inspection feature.
What should I do if my Cisco device is impacted by CVE-2011-4006?
If your Cisco device is impacted by CVE-2011-4006, you should implement the recommended patches or upgrade software versions immediately.
- collector/nvd-historical
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/severity
- agent/last-modified-date
- agent/first-publish-date
- agent/description
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-api
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/author
- vendor/cisco
- canonical/cisco adaptive security appliance software
- version/cisco adaptive security appliance software/8.2\(1\)
- version/cisco adaptive security appliance software/8.2\(2\)
- version/cisco adaptive security appliance software/8.2\(3\)
- version/cisco adaptive security appliance software/8.2\(3.9\)
- version/cisco adaptive security appliance software/8.2\(4\)
- version/cisco adaptive security appliance software/8.2\(4.1\)
- version/cisco adaptive security appliance software/8.2\(4.4\)
- version/cisco adaptive security appliance software/8.2\(5\)
- version/cisco adaptive security appliance software/8.2.1
- version/cisco adaptive security appliance software/8.2.2
- version/cisco adaptive security appliance software/8.2.2-interim
- version/cisco adaptive security appliance software/8.2.3
- version/cisco adaptive security appliance software/8.3\(1\)
- version/cisco adaptive security appliance software/8.3\(2\)
- version/cisco adaptive security appliance software/8.3.1
- version/cisco adaptive security appliance software/8.3.1-interim
- version/cisco adaptive security appliance software/8.3.2
- version/cisco adaptive security appliance software/8.4
- version/cisco adaptive security appliance software/8.4\(1\)
- version/cisco adaptive security appliance software/8.4\(1.11\)
- version/cisco adaptive security appliance software/8.4\(2\)
- version/cisco adaptive security appliance software/8.4\(2.11\)
- version/cisco adaptive security appliance software/8.5
- version/cisco adaptive security appliance software/8.5\(1\)
- version/cisco adaptive security appliance software/8.5\(1.4\)
- canonical/cisco adaptive security appliance 5500