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2019-01 Security Bulletin: Junos OS: rpd crash on VPLS PE upon receipt of specific BGP message (CVE-2019-0012)

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Article ID: JSA10912 SECURITY_ADVISORIES Last Updated: 22 Jan 2019Version: 3.0
Product Affected:
This issue affects Junos OS 12.1X46, 12.3, 12.3X48, 14.1X53, 15.1, 15.1X49, 15.1X53, 16.1, 16.2, 17.1, 17.2, 17.3, 17.4, 18.1.
Problem:

A Denial of Service (DoS) vulnerability in BGP in Juniper Networks Junos OS configured as a VPLS PE allows an attacker to craft a specific BGP message to cause the routing protocol daemon (rpd) process to crash and restart. While rpd restarts after a crash, repeated crashes can result in an extended DoS condition.

This issue only affects PE routers configured with BGP Auto discovery for LDP VPLS. Other BGP configurations are unaffected by this vulnerability.

Affected releases are Juniper Networks Junos OS:

  • 12.1X46 versions prior to 12.1X46-D81;
  • 12.3 versions prior to 12.3R12-S12;
  • 12.3X48 versions prior to 12.3X48-D76;
  • 14.1X53 versions prior to 14.1X53-D48;
  • 15.1 versions prior to 15.1F6-S12, 15.1R7-S2;
  • 15.1X49 versions prior to 15.1X49-D150;
  • 15.1X53 versions prior to 15.1X53-D235, 15.1X53-D495, 15.1X53-D590, 15.1X53-D68;
  • 16.1 versions prior to 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S1;
  • 16.2 versions prior to 16.2R2-S7;
  • 17.1 versions prior to 17.1R2-S9, 17.1R3;
  • 17.2 versions prior to 17.2R1-S7, 17.2R2-S6, 17.2R3;
  • 17.3 versions prior to 17.3R2-S4, 17.3R3;
  • 17.4 versions prior to 17.4R1-S5, 17.4R2;
  • 18.1 versions prior to 18.1R2-S3, 18.1R3.

This issue only occurs when BGP Auto discovery for LDP VPLS is configured:

set protocols bgp group <name> family l2vpn auto-discovery-only
set routing-instances <name> instance-type vpls
set routing-instances <name> l2vpn-id l2vpn-id:<id>

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-2019-0012.
 

Solution:

The following software releases have been updated to resolve this specific issue: Junos OS 12.1X46-D81, 12.3R12-S12, 12.3X48-D76, 12.3X48-D80, 15.1F6-S12, 15.1R7-S2, 15.1X49-D150, 15.1X53-D235, 15.1X53-D495, 15.1X53-D590, 15.1X53-D68, 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S1, 16.2R2-S7, 17.1R2-S9, 17.1R3, 17.2R1-S7, 17.2R2-S6, 17.2R3, 17.3R2-S4, 17.3R3, 17.4R1-S5, 17.4R2, 18.1R2-S3, 18.1R3, 18.2R1, 18.2X75-D10, and all subsequent releases.
This issue is being tracked as PR 1352498 which is visible on the Customer Support website.

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).

 

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:
2019-01-09: Initial publication
‚Äč2019-01-10: Minor edit on the Solution section
2019-01-22: Minor update on the Solution section




CVSS Score:
7.5 (CVSS:3.0/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."

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