high
7.5
Advisory Published
Updated

CVE-2017-6729

First published: Mon Jul 10 2017(Updated: )

A vulnerability in the Border Gateway Protocol (BGP) processing functionality of the Cisco StarOS operating system for Cisco ASR 5000 Series Routers and Cisco Virtualized Packet Core (VPC) Software could allow an unauthenticated, remote attacker to cause the BGP process on an affected system to reload, resulting in a denial of service (DoS) condition. This vulnerability affects the following products if they are running the Cisco StarOS operating system and BGP is enabled for the system: Cisco ASR 5000 Series Routers and Cisco Virtualized Packet Core Software. More Information: CSCvc44968. Known Affected Releases: 16.4.1 19.1.0 21.1.0 21.1.M0.65824. Known Fixed Releases: 21.3.A0.65902 21.2.A0.65905 21.1.b0.66164 21.1.V0.66014 21.1.R0.65898 21.1.M0.65894 21.1.0.66030 21.1.0.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco ASR 5000 Series Routers=16.4.1
Cisco ASR 5000 Series Routers=16.5.0
Cisco ASR 5000 Series Routers=16.5.2
Cisco ASR 5000 Series Routers=17.2.0
Cisco ASR 5000 Series Routers=17.2.0.59184
Cisco ASR 5000 Series Routers=17.3.0
Cisco ASR 5000 Series Routers=17.3.1
Cisco ASR 5000 Series Routers=17.3.9.62033
Cisco ASR 5000 Series Routers=17.3_base
Cisco ASR 5000 Series Routers=17.7.0
Cisco ASR 5000 Series Routers=17.7.5
Cisco ASR 5000 Series Routers=18.0.0
Cisco ASR 5000 Series Routers=18.0.0.57828
Cisco ASR 5000 Series Routers=18.0.0.59167
Cisco ASR 5000 Series Routers=18.0.0.59211
Cisco ASR 5000 Series Routers=18.0.l0.59219
Cisco ASR 5000 Series Routers=18.1.0
Cisco ASR 5000 Series Routers=18.1.0.59776
Cisco ASR 5000 Series Routers=18.1.0.59780
Cisco ASR 5000 Series Routers=18.1_base
Cisco ASR 5000 Series Routers=18.3.0
Cisco ASR 5000 Series Routers=18.3_base
Cisco ASR 5000 Series Routers=18.4.0
Cisco ASR 5000 Series Routers=19.0.1
Cisco ASR 5000 Series Routers=19.0.m0.60737
Cisco ASR 5000 Series Routers=19.0.m0.60828
Cisco ASR 5000 Series Routers=19.0.m0.61045
Cisco ASR 5000 Series Routers=19.1.0
Cisco ASR 5000 Series Routers=19.1.0.61559
Cisco ASR 5000 Series Routers=19.2.0
Cisco ASR 5000 Series Routers=19.3.0
Cisco ASR 5000 Series Routers=19.6.3
Cisco ASR 5000 Series Routers=19.6_base
Cisco ASR 5000 Series Routers=20.0.0
Cisco ASR 5000 Series Routers=20.0.1.0
Cisco ASR 5000 Series Routers=20.0.1.a0
Cisco ASR 5000 Series Routers=20.0.1.v0
Cisco ASR 5000 Series Routers=20.0.2.3
Cisco ASR 5000 Series Routers=20.0.2.3.65026
Cisco ASR 5000 Series Routers=20.0.2.v1
Cisco ASR 5000 Series Routers=20.0.m0.62842
Cisco ASR 5000 Series Routers=20.0.m0.63229
Cisco ASR 5000 Series Routers=20.0.v0
Cisco ASR 5000 Series Routers=20.1.v2
Cisco ASR 5000 Series Routers=20.1_base
Cisco ASR 5000 Series Routers=20.2.12
Cisco ASR 5000 Series Routers=20.2_base
Cisco ASR 5000 Series Routers=21.0.0
Cisco ASR 5000 Series Routers=21.0.v1
Cisco ASR 5000 Series Routers=21.0_base
Cisco ASR 5000 Series Routers=21.0_m0.64246
Cisco ASR 5000 Series Routers=21.0_m0.64702
Cisco ASR 5000 firmware

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.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2017-6729?

    CVE-2017-6729 is categorized as a critical vulnerability that can allow an unauthenticated remote attacker to disrupt the BGP process.

  • How do I fix CVE-2017-6729?

    To mitigate CVE-2017-6729, upgrade to a version of Cisco ASR 5000 Software that is free from this vulnerability.

  • Which Cisco software versions are affected by CVE-2017-6729?

    CVE-2017-6729 affects Cisco ASR 5000 Software versions 16.4.1, 16.5.0, 16.5.2, 17.2.0, and multiple other releases up to 21.0.v1.

  • What type of attack does CVE-2017-6729 enable?

    CVE-2017-6729 enables an unauthenticated remote attacker to cause the BGP process on affected systems to reload.

  • Is there a workaround for CVE-2017-6729?

    There are no known workarounds for CVE-2017-6729; the recommended action is to apply the available updates.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203