CVE-2014-3321: Input Validation
First published: Fri Jul 18 2014(Updated: )
Cisco IOS XR 4.3.4 and earlier on ASR 9000 devices, when bridge-group virtual interface (BVI) routing is enabled, allows remote attackers to cause a denial of service (chip and card hangs) via a series of crafted MPLS packets, aka Bug ID CSCuo91149.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XRv 9000 | <=4.3.4 | |
| Cisco IOS XRv 9000 | =4.3.0 | |
| Cisco IOS XRv 9000 | =4.3.1 | |
| Cisco IOS XRv 9000 | =4.3.2 | |
| Cisco ASR 9000v-v2 | ||
| Cisco ASR 9001 | ||
| Cisco ASR 9006 Router | ||
| Cisco ASR 9010 Router | ||
| Cisco ASR 9904 | ||
| Cisco ASR 9912 | ||
| Cisco ASR 9922 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2014-3321?
CVE-2014-3321 has a high severity rating due to its potential to cause denial of service by making devices unresponsive.
How do I fix CVE-2014-3321?
To mitigate CVE-2014-3321, upgrade Cisco IOS XR to version 4.3.5 or later.
Is my device affected by CVE-2014-3321?
Devices running Cisco IOS XR versions 4.3.4 and earlier, particularly on ASR 9000 series, are vulnerable to CVE-2014-3321.
What are the risks associated with CVE-2014-3321?
Exploitation of CVE-2014-3321 can lead to significant network disruptions and downtime due to chip and card hangs.
When should I be concerned about CVE-2014-3321?
Immediate concern is warranted if you are using vulnerable versions of Cisco IOS XR as they can be exploited remotely.
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- source/MITRE
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- agent/weakness
- agent/description
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/softwarecombine
- vendor/cisco
- canonical/cisco ios xrv 9000
- version/cisco ios xrv 9000/4.3.4
- version/cisco ios xrv 9000/4.3.0
- version/cisco ios xrv 9000/4.3.1
- version/cisco ios xrv 9000/4.3.2
- canonical/cisco asr 9000v-v2
- canonical/cisco asr 9001
- canonical/cisco asr 9006 router
- canonical/cisco asr 9010 router
- canonical/cisco asr 9904
- canonical/cisco asr 9912
- canonical/cisco asr 9922