CVE-2020-1608: Junos OS: MX Series: In BBE configurations, receipt of a specific MPLS or IPv6 packet causes a Denial of Service
Receipt of a specific MPLS or IPv6 packet on the core facing interface of an MX Series device configured for Broadband Edge (BBE) service may trigger a kernel crash (vmcore), causing the device to reboot. The issue is specific to the processing of packets destined to BBE clients connected to MX Series subscriber management platforms. This issue affects MX Series running Juniper Networks Junos OS: 17.2 versions starting from17.2R2-S6, 17.2R3 and later releases, prior to 17.2R3-S3; 17.3 versions starting from 17.3R2-S4, 17.3R3-S2 and later releases, prior to 17.3R2-S5, 17.3R3-S5; 17.4 versions starting from 17.4R2 and later releases, prior to 17.4R2-S7,17.4R3; 18.1 versions starting from 18.1R2-S3, 18.1R3 and later releases, prior to 18.1R3-S6; 18.2 versions starting from18.2R1-S1, 18.2R2 and later releases, prior to 18.2R3-S2; 18.2X75 versions prior to 18.2X75-D51, 18.2X75-D60; 18.3 versions prior to 18.3R3; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R1-S3, 19.1R2; 19.2 versions prior to 19.2R1-S2, 19.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 17.2R2-S6.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.2R3-S3 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.3R2-S5 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.3R3-S5 - Upgrade
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Fixed in 17.4R2-S7 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.4R3 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 18.1R3-S6 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 18.2R3-S2 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 18.2X75-D51 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 18.2X75-D60 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 18.3R3 - Upgrade
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Fixed in 18.4R2 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 19.1R1-S3 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 19.1R2 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 19.2R1-S2 - Upgrade
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Fixed in 19.2R2 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 19.3R1
Event History
Frequently Asked Questions
What is the severity of CVE-2020-1608?
CVE-2020-1608 has a severity rating that can affect the availability of devices.
How do I fix CVE-2020-1608?
To fix CVE-2020-1608, update the affected Juniper JUNOS versions to the latest non-vulnerable release.
Which software versions are affected by CVE-2020-1608?
Affected versions of Juniper JUNOS include 17.2, 17.3, 17.4, 18.1, 18.2, and 18.3.
What are the implications of CVE-2020-1608 for network stability?
CVE-2020-1608 can cause device reboots, leading to potential network outages.
How can I identify if my device is affected by CVE-2020-1608?
You can identify if your device is affected by checking the installed version of Juniper JUNOS against the vulnerable versions listed in the CVE report.