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AUSCERT External Security Bulletin Redistribution
ESB-2020.0088
JSA10987 - 2020-01 Security Bulletin: Junos OS: MX Series: In BBE
configurations, receipt of a specific MPLS or IPv6 packet
causes a Denial of Service
9 January 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: MX Series running Junos OS
Publisher: Juniper Networks
Operating System: Juniper
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-1608
Original Bulletin:
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10987
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2020-01 Security Bulletin: Junos OS: MX Series: In BBE configurations, receipt
of a specific MPLS or IPv6 packet causes a Denial of Service (CVE-2020-1608)
Article ID : JSA10987
Last Updated: 08 Jan 2020
Version : 3.0
Product Affected:
This issue affects Junos OS 17.2, 17.3, 17.4, 18.1, 18.2, 18.2X75, 18.3, 18.4,
19.1, 19.2. Affected platforms: MX Series.
Problem:
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 from 17.2R2-S6, 17.2R3 and later releases, prior to
17.2R3-S3;
17.3 versions prior to 17.3R2-S5, 17.3R3-S5;
17.4 versions prior to 17.4R2-S7,17.4R3;
18.1 versions prior to 18.1R3-S6;
18.2 versions 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 17.2R1.
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was seen during production usage.
This issue has been assigned CVE-2020-1608 .
Solution:
The following software releases have been updated to resolve this specific
issue: 17.2R3-S3, 17.3R2-S5, 17.3R3-S5, 17.4R2-S7, 17.4R3, 18.1R3-S6,
18.2R3-S2, 18.2X75-D51, 18.2X75-D60, 18.3R3, 18.4R2, 19.1R1-S3, 19.1R2,
19.2R1-S2, 19.2R2, 19.3R1, and all subsequent releases.
This issue is being tracked as 1432957 .
Workaround:
There are no known workarounds for this issue.
Implementation:
Software Releases, patches and updates are available at https://www.juniper.net
/support/downloads/ .
Modification History:
2020-01-08: Initial Publication.
CVSS Score:
7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Severity Level:
High
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