2020-07 Security Bulletin: Junos OS and Junos OS Evolved: RPD crash due to specific BGP UPDATE packets (CVE-2020-1644)

Product Affected:

This issue affects Junos OS 17.2X75, 17.3, 17.4, 18.1, 18.2, 18.2X75, 18.3, 18.4, 19.1, 19.2, 19.3, 19.4. This issue affects Junos OS Evolved 19.2-EVO, 19.3-EVO, 19.4-EVO, 20.1-EVO.

Problem:

On Juniper Networks Junos OS and Junos OS Evolved devices, the receipt of a specific BGP UPDATE packet causes an internal counter to be incremented incorrectly, which over time can lead to the routing protocols process (RPD) crash and restart.

This issue affects both IBGP and EBGP multihop deployment in IPv4 or IPv6 network.

This issue affects:

Juniper Networks Junos OS:

17.2X75 versions prior to 17.2X75-D105.19;

17.3 versions prior to 17.3R3-S8;

17.4 versions prior to 17.4R2-S10, 17.4R3-S2;

18.1 versions prior to 18.1R3-S10;

18.2 versions prior to 18.2R2-S7, 18.2R3-S4;

18.2X75 versions prior to 18.2X75-D13, 18.2X75-D411.1, 18.2X75-D420.18, 18.2X75-D52.3, 18.2X75-D60;

18.3 versions prior to 18.3R2-S4, 18.3R3-S2;

18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3-S2;

19.1 versions prior to 19.1R1-S5, 19.1R2-S1, 19.1R3;

19.2 versions prior to 19.2R1-S5, 19.2R2;

19.3 versions prior to 19.3R2-S2, 19.3R3;

19.4 versions prior to 19.4R1-S2, 19.4R2.

Juniper Networks Junos OS Evolved: any releases prior to 20.1R2-EVO.

This issue does not affect Juniper Networks Junos OS releases prior to 17.3R1.

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-2020-1644.

Solution:

The following software releases have been updated to resolve this specific issue:

Junos OS: 17.2X75-D105.19, 17.3R3-S8, 17.4R2-S10, 17.4R3-S2, 18.1R3-S10, 18.2R2-S7, 18.2R3-S4, 18.2X75-D13, 18.2X75-D411.1, 18.2X75-D420.18, 18.2X75-D52.3, 18.2X75-D60, 18.3R2-S4, 18.3R3-S2, 18.4R1-S7, 18.4R2-S4, 18.4R3-S2, 19.1R1-S5, 19.1R2-S1, 19.1R3, 19.2R1-S5, 19.2R2, 19.3R2-S2, 19.3R3, 19.4R1-S2, 19.4R2, 20.1R1 and all subsequent releases.

Junos OS Evolved: 20.1R2-EVO, 20.2R1-EVO and all subsequent releases.

This issue is being tracked as 1481641.

Workaround:

There are no available workarounds for this issue.

Implementation:

Software releases or updates are available for download at https://www.juniper.net/support/downloads/.

Modification History:

2020-07-08: 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

Severity Assessment:

Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

Knowledge Base