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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2021-0299

Junos OS: Kernel crash (vmcore) upon receipt of a malformed IPv6 packet

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Status
Published
Published
Updated
Assigning organization
juniper

Description

An Improper Handling of Exceptional Conditions vulnerability in the processing of a transit or directly received malformed IPv6 packet in Juniper Networks Junos OS results in a kernel crash, causing the device to restart, leading to a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects systems with IPv6 configured. Devices with only IPv4 configured are not vulnerable to this issue. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S1, 20.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.4R1.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Juniper Networks Junos OS

  • unspecified to < 19.4R1unaffected
  • 19.4 to < 19.4R3affected
  • 20.1 to < 20.1R2affected
  • 20.2 to < 20.2R1-S1, 20.2R2affected

References