CVE-2011-4007: Input Validation
First published: Wed May 02 2012(Updated: )
Cisco IOS 15.0 and 15.1 and IOS XE 3.x do not properly handle the "set mpls experimental imposition" command, which allows remote attackers to cause a denial of service (device crash) via network traffic that triggers (1) fragmentation or (2) reassembly, aka Bug ID CSCtr56576.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE | =3.2.0sg | |
| Cisco IOS XE | =3.5.0s | |
| Cisco IOS XE | =3.4.1s | |
| Cisco IOS | =15.1 | |
| Cisco IOS XE | =3.3.3s | |
| Cisco IOS XE | =3.3.1s | |
| Cisco IOS XE | =3.2.0s | |
| Cisco IOS XE | =3.3.2s | |
| Cisco IOS | =15.0 | |
| Cisco IOS XE | =3.2.1sg | |
| Cisco IOS XE | =3.2.1s | |
| Cisco IOS XE | =3.1.0sg | |
| Cisco IOS XE | =3.1.2s | |
| Cisco IOS XE | =3.4.0s | |
| Cisco IOS XE | =3.1.1s | |
| Cisco IOS XE | =3.2.2s | |
| Cisco IOS XE | =3.1.0s | |
| Cisco IOS XE | =3.1.4s | |
| Cisco IOS XE | =3.3.0s | |
| Cisco IOS XE | =3.1.3s | |
| Cisco IOS XE | =3.1.1sg |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2011-4007?
CVE-2011-4007 is classified as a high severity vulnerability due to its potential to cause a denial of service by crashing affected Cisco devices.
How do I fix CVE-2011-4007?
To remediate CVE-2011-4007, you should update affected Cisco IOS and IOS XE software to the latest patched versions provided by Cisco.
Which devices are affected by CVE-2011-4007?
CVE-2011-4007 affects Cisco IOS version 15.0 and 15.1 as well as IOS XE versions 3.1.0SG through 3.5.0S.
What is the impact of the vulnerability identified by CVE-2011-4007?
The impact of CVE-2011-4007 is that remote attackers can exploit this vulnerability to cause a denial of service through crafted network traffic.
What command triggers the vulnerability CVE-2011-4007?
The vulnerability CVE-2011-4007 is triggered by the improper handling of the "set mpls experimental imposition" command in the affected software.
- collector/nvd-historical
- collector/nvd-index
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/severity
- agent/author
- agent/last-modified-date
- agent/first-publish-date
- agent/tags
- agent/description
- agent/event
- agent/source
- vendor/cisco
- canonical/cisco ios xe
- version/cisco ios xe/3.2.0sg
- version/cisco ios xe/3.5.0s
- version/cisco ios xe/3.4.1s
- canonical/cisco ios
- version/cisco ios/15.1
- version/cisco ios xe/3.3.3s
- version/cisco ios xe/3.3.1s
- version/cisco ios xe/3.2.0s
- version/cisco ios xe/3.3.2s
- version/cisco ios/15.0
- version/cisco ios xe/3.2.1sg
- version/cisco ios xe/3.2.1s
- version/cisco ios xe/3.1.0sg
- version/cisco ios xe/3.1.2s
- version/cisco ios xe/3.4.0s
- version/cisco ios xe/3.1.1s
- version/cisco ios xe/3.2.2s
- version/cisco ios xe/3.1.0s
- version/cisco ios xe/3.1.4s
- version/cisco ios xe/3.3.0s
- version/cisco ios xe/3.1.3s
- version/cisco ios xe/3.1.1sg