CVE-2019-0037

Junos OS: jdhcpd crash upon receipt of crafted DHCPv6 solicit message

HIGH

7.5

CVSS Score

Published: April 10, 2019 at 08:13 PM UTC

Updated: June 17, 2026 at 02:07 AM UTC

1 product affected across 1 vendorJunos

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

Description

In a Dynamic Host Configuration Protocol version 6 (DHCPv6) environment, the jdhcpd daemon may crash and restart upon receipt of certain DHCPv6 solicit messages received from a DHCPv6 client. By continuously sending the same crafted packet, an attacker can repeatedly crash the jdhcpd process causing a sustained Denial of Service (DoS) to both IPv4 and IPv6 clients. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1F6-S12, 15.1R7-S3; 15.1X49 versions prior to 15.1X49-D171, 15.1X49-D180; 15.1X53 versions prior to 15.1X53-D236, 15.1X53-D496; 16.1 versions prior to 16.1R3-S10, 16.1R7-S4; 16.2 versions prior to 16.2R2-S8; 17.1 versions prior to 17.1R2-S10, 17.1R3; 17.2 versions prior to 17.2R1-S8, 17.2R3-S1; 17.3 versions prior to 17.3R3-S3; 17.4 versions prior to 17.4R1-S6, 17.4R2-S3; 18.1 versions prior to 18.1R2-S4, 18.1R3-S2; 18.2 versions prior to 18.2R2; 18.2X75 versions prior to 18.2X75-D30; 18.3 versions prior to 18.3R1-S2. This issue does not affect Junos OS releases prior to 15.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

15.1X49 ≤ v < 15.1X49-D171, 15.1X49-D18015.1X53 ≤ v < 15.1X53-D236, 15.1X53-D49616.1 ≤ v < 16.1R3-S10, 16.1R7-S416.2 ≤ v < 16.2R2-S817.1 ≤ v < 17.1R2-S10, 17.1R317.2 ≤ v < 17.2R1-S8, 17.2R3-S117.3 ≤ v < 17.3R3-S317.4 ≤ v < 17.4R1-S6, 17.4R2-S318.1 ≤ v < 18.1R2-S4, 18.1R3-S218.2 ≤ v < 18.2R218.2X75 ≤ v < 18.2X75-D3018.3 ≤ v < 18.3R1-S215.1 r1 15.1 r2 15.1 r3 15.1 r4 15.1 r5 15.1 r6 15.1 r7 15.1X49 15.1X5315.1x49-d14015.1x49-d15015.1x49-d16015.1x49-d3015.1x49-d6015.1x53-d5015.1x53-d5115.1x53-d5215.1x53-d5515.1x53-d5715.1x53-d5815.1x53-d5916 r2 16 r3 16 r4 16 r5 16 r6 16 r7 16.1 16.2 16.2 r1 16.2 r2 16.2 r2-s7 17.1 17.1 r1 17.1 r2 17.1 r2-s9 17.2 17.2 r1 17.2 r1-s7 17.2 r2 17.2 r3 17.3 17.3 r1 17.3 r2 17.3 r3 17.3 r3-s2 17.4 17.4 r1 17.4 r1-s5 17.4 r2 18.1 18.1 r1 18.1 r2 18.1 r3 18.1 r3-s1 18.2 18.2 r1 18.2X75 18.2x75-d10 18.3 18.3 r1 18.3 r1-s1

Vendor states this is fixed in 15.1 (unaffected)

Affected range stops below 15.1X49-D171, 15.1X49-D180, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D236, 15.1X53-D496, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.1R3-S10, 16.1R7-S4, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.2R2-S8, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.1R2-S10, 17.1R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.2R1-S8, 17.2R3-S1, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.3R3-S3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.4R1-S6, 17.4R2-S3, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.1R2-S4, 18.1R3-S2, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2X75-D30, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.3R1-S2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://kb.juniper.net/JSA10926

References (2)

VDB Entryx_refsource_BIDBroken Link

Source: [email protected]

http://www.securityfocus.com/bid/107894

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://kb.juniper.net/JSA10926

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfo

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