CVE-2020-1671

Junos OS: Receipt of malformed DHCPv6 packets causes jdhcpd to crash.

State: Published
Severity: 7.5 High
Published: Oct 16, 2020
Updated: Sep 17, 2024
Reserved: Nov 4, 2019

Description

On Juniper Networks Junos OS platforms configured as DHCPv6 local server or DHCPv6 Relay Agent, Juniper Networks Dynamic Host Configuration Protocol Daemon (JDHCPD) process might crash with a core dump if a malformed DHCPv6 packet is received, resulting with the restart of the daemon. This issue only affects DHCPv6, it does not affect DHCPv4. This issue affects: Juniper Networks Junos OS 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.2X75 versions prior to 18.2X75-D65; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R3; 19.2 version 19.2R2 and later versions; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R1-S3, 20.1R2; This issue does not affect Juniper Networks Junos OS prior to 17.4R1.

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-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
Junos OSJuniper Networks	before 17.4R1Not affected 17.4 to before 17.4R2-S12, 17.4R3-S3Affected 18.1 to before 18.1R3-S11Affected 18.2 to before 18.2R3-S6Affected 18.2X75 to before 18.2X75-D65Affected 18.3 to before 18.3R2-S4, 18.3R3-S3Affected 18.4 to before 18.4R2-S5, 18.4R3-S4Affected 19.1 to before 19.1R3-S2Affected 19.2 to before 19.2R1-S5, 19.2R3Affectedfrom 19.2R2Affected 19.3 to before 19.3R2-S4, 19.3R3Affected 19.4 to before 19.4R1-S3, 19.4R2-S2, 19.4R3Affected 20.1 to before 20.1R1-S3, 20.1R2Affected

Product

Versions

Junos OSJuniper Networks

before 17.4R1Not affected
17.4 to before 17.4R2-S12, 17.4R3-S3Affected
18.1 to before 18.1R3-S11Affected
18.2 to before 18.2R3-S6Affected
18.2X75 to before 18.2X75-D65Affected
18.3 to before 18.3R2-S4, 18.3R3-S3Affected
18.4 to before 18.4R2-S5, 18.4R3-S4Affected
19.1 to before 19.1R3-S2Affected
19.2 to before 19.2R1-S5, 19.2R3Affectedfrom 19.2R2Affected
19.3 to before 19.3R2-S4, 19.3R3Affected
19.4 to before 19.4R1-S3, 19.4R2-S2, 19.4R3Affected
20.1 to before 20.1R1-S3, 20.1R2Affected

References

https://kb.juniper.net/JSA11068

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