2019-04 Security Bulletin: Junos OS: RPD process crashes upon receipt of a specific SNMP packet (CVE-2019-0043)

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Product Affected:
This issue affects Junos OS 12.1X46, 12.3, 12.3X48, 14.1X53, 15.1 , 15.1F6, 15.1X49, 15.1X53, 15.1X54, 16.1, 16.1X65, 16.2, 17.1, 17.2, 17.2X75, 17.3, 17.4, 18.1, 18.2X75.
Problem:

In MPLS environments, receipt of a specific SNMP packet may cause the routing protocol daemon (RPD) process to crash and restart. By continuously sending a specially crafted SNMP packet, an attacker can repetitively crash the RPD process causing prolonged denial of service.

No other Juniper Networks products or platforms are affected by this issue.

Affected releases are Juniper Networks Junos OS :

  • 12.1X46 versions prior to 12.1X46-D77 on SRX Series;
  • 12.3 versions prior to 12.3R12-S10;
  • 12.3X48 versions prior to 12.3X48-D75 on SRX Series;
  • 14.1X53 versions prior to 14.1X53-D48 on EX/QFX series;
  • 15.1 versions prior to 15.1R4-S9, 15.1R7-S2;
  • 15.1F6 versions prior to 15.1F6-S11;
  • 15.1X49 versions prior to 15.1X49-D141, 15.1X49-D144, 15.1X49-D150 on SRX Series;
  • 15.1X53 versions prior to 15.1X53-D234 on QFX5200/QFX5110 Series;
  • 15.1X53 versions prior to 15.1X53-D68 on QFX10K Series;
  • 15.1X53 versions prior to 15.1X53-D471, 15.1X53-D490 on NFX Series;
  • 15.1X53 versions prior to 15.1X53-D590 on EX2300/EX3400 Series;
  • 15.1X54 on ACX Series;
  • 16.1 versions prior to 16.1R3-S10, 16.1R4-S11, 16.1R6-S5, 16.1R7;
  • 16.1X65 versions prior to 16.1X65-D48;
  • 16.2 versions prior to 16.2R2-S6;
  • 17.1 versions prior to 17.1R2-S8, 17.1R3;
  • 17.2 versions prior to 17.2R1-S7, 17.2R3;
  • 17.2X75 versions prior to 17.2X75-D92, 17.2X75-D102, 17.2X75-D110;
  • 17.3 versions prior to 17.3R3;
  • 17.4 versions prior to 17.4R1-S4, 17.4R2;
  • 18.1 versions prior to 18.1R1-S1, 18.1R2-S1, 18.1R3;
  • 18.2X75 versions prior to 18.2X75-D10.

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-2019-0043.

Solution:

The following software releases have been updated to resolve this specific issue: 12.1X46-D77, 12.3R12-S10, 12.3X48-D75, 14.1X53-D48, 15.1F6-S11, 15.1R4-S9, 15.1R7-S2, 15.1X49-D141, 15.1X49-D144, 15.1X49-D150, 15.1X53-D234, 15.1X53-D471, 15.1X53-D590, 15.1X53-D68, 16.1R3-S10, 16.1R4-S11, 16.1R6-S5, 16.1R7, 16.1X65-D48, 16.2R2-S6, 17.1R2-S8, 17.1R3, 17.2R1-S7, 17.2R3, 17.2X75-D102, 17.2X75-D110, 17.2X75-D92, 17.3R3, 17.4R1-S4, 17.4R2, 18.1R1-S1, 18.1R2-S1, 18.1R3, 18.2R1, 18.2X75-D10, and all subsequent releases.

This issue is being tracked as PR 1359966 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:

Disable SNMP (disabled by default), utilize edge filtering with source-address validation (uRPF, etc.), access control lists (ACLs), and/or SNMPv3 authentication to limit access to the device only from trusted hosts.

Implementation:
Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/.
Modification History:
  • 2019-04-10: Initial Publication.

 

Related Links:
CVSS Score:
7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Risk Level:
High
Risk Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."