high
7.1
CWE
20
Advisory Published
Updated

CVE-2019-1760: Cisco IOS XE Software Performance Routing Version 3 Denial of Service Vulnerability

First published: Thu Mar 28 2019(Updated: )

A vulnerability in Performance Routing Version 3 (PfRv3) of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the affected device to reload. The vulnerability is due to the processing of malformed smart probe packets. An attacker could exploit this vulnerability by sending specially crafted smart probe packets at the affected device. A successful exploit could allow the attacker to reload the device, resulting in a denial of service (DoS) attack on an affected system.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS XE Software=3.2.0ja
Cisco IOS XE Software=3.16.4as
Cisco IOS XE Software=3.16.4bs
Cisco IOS XE Software=3.16.4cs
Cisco IOS XE Software=3.16.4ds
Cisco IOS XE Software=3.16.4es
Cisco IOS XE Software=3.16.4gs
Cisco IOS XE Software=3.16.4s
Cisco IOS XE Software=3.16.5as
Cisco IOS XE Software=3.16.5bs
Cisco IOS XE Software=3.16.5s
Cisco IOS XE Software=3.16.6bs
Cisco IOS XE Software=3.16.6s
Cisco IOS XE Software=3.16.7as
Cisco IOS XE Software=3.16.7bs
Cisco IOS XE Software=3.16.7s
Cisco IOS XE Software=16.3.2
Cisco IOS XE Software=16.3.3
Cisco IOS XE Software=16.3.4
Cisco IOS XE Software=16.3.5
Cisco IOS XE Software=16.3.5b
Cisco IOS XE Software=16.3.6
Cisco IOS XE Software=16.4.1
Cisco IOS XE Software=16.4.2
Cisco IOS XE Software=16.4.3
Cisco IOS XE Software=16.5.1
Cisco IOS XE Software=16.5.1a
Cisco IOS XE Software=16.5.1b
Cisco IOS XE Software=16.5.2
Cisco IOS XE Software=16.5.3
Cisco IOS XE Software=16.6.1
Cisco IOS XE Software=16.6.2
Cisco IOS XE Software=16.6.3
Cisco IOS XE Software=16.7.1
Cisco IOS XE Software=16.7.1a
Cisco IOS XE Software=16.7.1b
Cisco IOS XE Software=16.8.1
Cisco IOS XE Software=16.8.1a
Cisco IOS XE Software=16.8.1b
Cisco IOS XE Software=16.8.1c
Cisco IOS XE Software=16.8.1s

Remedy

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-pfrv3

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2019-1760?

    CVE-2019-1760 is rated as a high severity vulnerability due to the potential for remote unauthenticated attackers to cause device reloads.

  • How do I fix CVE-2019-1760?

    To mitigate CVE-2019-1760, update your Cisco IOS XE device to the recommended fixed versions from Cisco's security advisory.

  • What systems are affected by CVE-2019-1760?

    CVE-2019-1760 affects various versions of Cisco IOS XE, including versions 3.2.0ja and several versions from 16.3.x to 16.8.x.

  • Can CVE-2019-1760 be exploited remotely?

    Yes, CVE-2019-1760 can be exploited by an unauthenticated remote attacker, making it particularly concerning for network security.

  • What are the implications of CVE-2019-1760?

    The implications of CVE-2019-1760 include potential service disruptions and loss of availability due to possible device reloads.

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