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2020-01 Security Bulletin: Junos OS: Upon receipt of certain types of malformed PCEP packets the pccd process may crash. (CVE-2020-1601)



Article ID: JSA10980 SECURITY_ADVISORIES Last Updated: 08 Jan 2020Version: 2.0
Product Affected:
This issue affects Junos OS 15.1, 15.1X49, 15.1X53, 16.1, 16.2, 17.1, 17.2, 17.3, 17.4, 18.1, 18.2, 18.2X75, 18.3, 18.4.

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:

[protocols pcep pce pce-id destination-ipv4-address ipv4-address]

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.


There are no viable workarounds for this issue.
Software Releases, patches and updates are available at    
Modification History:
2020-01-08: Initial Publication.
CVSS Score:
5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Severity Level:
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."

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