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CVE-2014-3321

5.7 · MEDIUM

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 se…

Published Jul 18, 2014ciscoCWE-20EPSS 0.65%

Overview

CVE-2014-3321 is a medium-severity vulnerability affecting cisco ios_xr. It was published on July 18, 2014 and has a CVSS 2.0 base score of 5.7 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.7, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from cisco. Update ios_xr to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
ciscoios_xr0Affected

References

Reftools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3321Reftools.cisco.com/security/center/viewAlert.x?alertId=34936Refwww.securitytracker.com/id/1030597Reftools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3321Reftools.cisco.com/security/center/viewAlert.x?alertId=34936Refwww.securitytracker.com/id/1030597

How CyberStrike helps

Frequently asked questions

What is CVE-2014-3321?

CVE-2014-3321 is a medium-severity vulnerability affecting cisco ios_xr. It was published on July 18, 2014 and has a CVSS 2.0 base score of 5.7 (MEDIUM).

How severe is CVE-2014-3321?

This vulnerability has a CVSS 2.0 base score of 5.7, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2014-3321?

Check the references section for vendor advisories and patches from cisco. Update ios_xr to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2014-3321?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-3321 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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