CVE-2020-1686

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

State: Published
Severity: 7.5 High
Published: Oct 16, 2020
Updated: Sep 16, 2024
Reserved: Nov 4, 2019

Description

On Juniper Networks Junos OS devices, receipt of a malformed IPv6 packet may cause the system to crash and restart (vmcore). This issue can be trigged by a malformed IPv6 packet destined to the Routing Engine. An attacker can repeatedly send the offending packet resulting in an extended Denial of Service condition. Only IPv6 packets can trigger this issue. IPv4 packets cannot trigger this issue. This issue affects Juniper Networks Junos OS 18.4 versions prior to 18.4R2-S4, 18.4R3-S1; 19.1 versions prior to 19.1R2-S1, 19.1R3; 19.2 versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2. This issue does not affect Juniper Networks Junos OS prior to 18.4R1.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	juniper

Weaknesses

CWE-415 Double Free

Affected Products

Product	Versions
Junos OSJuniper Networks	before 18.4R1Not affected 18.4 to before 18.4R2-S4, 18.4R3-S1Affected 19.1 to before 19.1R2-S1, 19.1R3Affected 19.2 to before 19.2R1-S5, 19.2R2Affected 19.3 to before 19.3R2-S4, 19.3R3Affected 19.4 to before 19.4R1-S3, 19.4R2Affected

References

https://kb.juniper.net/JSA11083

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