medium
6.5
Advisory Published
Updated

CVE-2019-0011: Junos OS: Kernel crash after processing specific incoming packet to the out of band management interface (CVE-2019-0011)

First published: Tue Jan 15 2019(Updated: )

The Junos OS kernel crashes after processing a specific incoming packet to the out of band management interface (such as fxp0, me0, em0, vme0) destined for another address. By continuously sending this type of packet, an attacker can repeatedly crash the kernel causing a sustained Denial of Service. Affected releases are Juniper Networks Junos OS: 17.2 versions prior to 17.2R1-S7, 17.2R3; 17.3 versions prior to 17.3R3-S3; 17.4 versions prior to 17.4R1-S4, 17.4R2; 17.2X75 versions prior to 17.2X75-D110; 18.1 versions prior to 18.1R2.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper Junos=17.2
Juniper Junos=17.2-r1
Juniper Junos=17.2-r1-s1
Juniper Junos=17.2-r1-s2
Juniper Junos=17.2-r1-s3
Juniper Junos=17.2-r1-s4
Juniper Junos=17.2-r1-s5
Juniper Junos=17.2-r1-s6
Juniper Junos=17.3
Juniper Junos=17.3-r1
Juniper Junos=17.3-r2
Juniper Junos=17.3-r3
Juniper Junos=17.3-r3-s1
Juniper Junos=17.3-r3-s2
Juniper Junos=17.4
Juniper Junos=17.4-r1
Juniper Junos=17.4-r1-s1
Juniper Junos=17.4-r1-s2
Juniper Junos=17.4-r1-s3
Juniper Junos=17.2x75
Juniper Junos=17.2x75-d100
Juniper Junos=17.2x75-d102
Juniper Junos=17.2x75-d50
Juniper Junos=17.2x75-d70
Juniper Junos=17.2x75-d90
Juniper Junos=17.2x75-d92
Juniper Junos=18.1

Remedy

The following software releases have been updated to resolve this specific issue: Junos OS 17.2R1-S7, 17.2R3, 17.2X75-D110, 17.3R3-S3, 17.4R1-S4, 17.4R2, 18.1R2, 18.2R1, 18.2X75-D5, and all subsequent releases.

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-2019-0011?

    CVE-2019-0011 has a high severity rating due to its potential to crash the Junos OS kernel.

  • How do I fix CVE-2019-0011?

    To fix CVE-2019-0011, it is recommended to upgrade to the latest version of Junos OS where the vulnerability has been addressed.

  • Which versions of Junos OS are affected by CVE-2019-0011?

    CVE-2019-0011 affects Junos OS versions 17.2, 17.3, 17.4, and earlier versions before the patch was applied.

  • What type of attack does CVE-2019-0011 allow?

    CVE-2019-0011 allows attackers to repeatedly crash the kernel by sending a specific type of malicious packet.

  • Is there a workaround for CVE-2019-0011?

    There is no officially recommended workaround for CVE-2019-0011; updating to a patched version is the most effective mitigation.

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