Certain types of malformed Path Computation Element Protocol (PCEP) packets when received and processed by a Juniper Networks Junos OS device serving as a Path Computation Client (PCC) in a PCEP environment using Juniper's path computational element protocol daemon (pccd) process allows an attacker to cause the pccd process to crash and generate a core file thereby causing a Denial of Service (DoS).

Continued receipt of this family of malformed PCEP packets will cause an extended Denial of Service (DoS) condition.

This issue affects:

Juniper Networks Junos OS:

15.1 versions prior to 15.1F6-S13, 15.1R7-S4;

15.1X49 versions prior to 15.1X49-D180 on SRX Series;

15.1X53 versions prior to 15.1X53-D238, 15.1X53-D496, 15.1X53-D592;

16.1 versions prior to 16.1R7-S4;

16.2 versions prior to 16.2R2-S9;

17.1 versions prior to 17.1R2-S11, 17.1R3;

17.2 versions prior to 17.2R1-S9;

17.2 version 17.2R2 and later prior to 17.2R3-S2;

17.3 versions prior to 17.3R3-S3;

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

18.1 versions prior to 18.1R3-S2;

18.2 versions prior to 18.2R2-S6, 18.2R3;

18.2X75 versions prior to 18.2X75-D40;

18.3 versions prior to 18.3R2;

18.4 versions prior to 18.4R1-S2, 18.4R2.

This issue does not affect releases of Junos OS prior to 15.1R1.

The following minimal configuration is required:

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was found during internal product security testing or research.

This issue has been assigned CVE-2020-1601 .

The following software releases have been updated to resolve this specific issue: 15.1F6-S13, 15.1R7-S4, 15.1X49-D180, 15.1X53-D238, 15.1X53-D496, 15.1X53-D592, 16.1R7-S4, 16.2R2-S9, 17.1R2-S11, 17.1R3, 17.2R1-S9, 17.2R3-S2, 17.3R3-S3, 17.4R2-S2, 17.4R2-S4, 17.4R3, 18.1R3-S2, 18.2R2-S6, 18.2R3, 18.2X75-D40, 18.3R2, 18.4R1-S2, 18.4R2, 19.1R1, and all subsequent releases.

This issue is being tracked as 1395205 .

Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/ .    

There are no viable workarounds for this issue.

2020-01-08: Initial Publication.

• KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process [juniper.net]
• KB16765: In which releases are vulnerabilities fixed? [juniper.net]
• KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories [juniper.net]
• Report a Security Vulnerability - How to Contact the Juniper Networks Security Incident Response Team
• CVE-2020-1601 at cve.mitre.org