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2018-10 Security Bulletin: Junos OS: RPD daemon crashes due to receipt of specific Draft-Rosen MVPN control packet in Draft-Rosen MVPN configuration (CVE-2018-0045)

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Article ID: JSA10879 SECURITY_ADVISORIES Last Updated: 10 Oct 2018Version: 3.0
Product Affected:
This issue affects Junos OS 12.1X46, 12.3, 12.3X48, 15.1, 15.1F6, 15.1X49, 15.1X53, 16.1, 16.2, 17.1, 17.2, 17.3, 17.4, 18.1.
Problem:
Receipt of a specific Draft-Rosen MVPN control packet may cause the routing protocol daemon (RPD) process to crash and restart or may lead to remote code execution. By continuously sending the same specific Draft-Rosen MVPN control packet, an attacker can repeatedly crash the RPD process causing a prolonged denial of service.

This issue may occur when the Junos OS device is configured for Draft-Rosen multicast virtual private network (MVPN). The VPN is multicast-enabled and configured to use Protocol Independent Multicast (PIM) protocol within the VPN.

This issue can only be exploited from the PE device within the MPLS domain which is capable of forwarding IP multicast traffic in core.
End-users connected to the CE device cannot cause this crash.

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-D70 on SRX Series;
  • 15.1 versions prior to 15.1R4-S9, 15.1R6-S6, 15.1R7;
  • 15.1F6;
  • 15.1X49 versions prior to 15.1X49-D140 on SRX Series;
  • 15.1X53 versions prior to 15.1X53-D59 on EX2300/EX3400 Series;
  • 15.1X53 versions prior to 15.1X53-D67 on QFX10K Series;
  • 15.1X53 versions prior to 15.1X53-D233 on QFX5200/QFX5110 Series;
  • 15.1X53 versions prior to 15.1X53-D471, 15.1X53-D490 on NFX Series;
  • 16.1 versions prior to 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7;
  • 16.2 versions prior to 16.2R1-S6, 16.2R2-S6, 16.2R3;
  • 17.1 versions prior to 17.1R1-S7, 17.1R2-S7, 17.1R3;
  • 17.2 versions prior to 17.2R2-S4, 17.2R3;
  • 17.3 versions prior to 17.3R2-S2, 17.3R3;
  • 17.4 versions prior to 17.4R1-S3, 17.4R2;
  • 18.1 versions prior to 18.1R2.

This issue may occurs when the Junos OS device is configured with:
[routing-instances <name> protocols pim mvpn]
[routing-instances <name> provider-tunnel pim-*]


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

This issue was seen during production usage.

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

This issue has been assigned CVE-2018-0045.
 
Solution:

The following software releases have been updated to resolve this specific issue: 12.1X46-D77, 12.3R12-S10, 12.3X48-D70, 15.1R4-S9, 15.1R6-S6, 15.1R7, 15.1X49-D140, 15.1X53-D233, 15.1X53-D471, 15.1X53-D490, 15.1X53-D59, 15.1X53-D67, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7, 16.2R1-S6, 16.2R2-S6, 16.2R3, 17.1R1-S7, 17.1R2-S7, 17.1R3, 17.2R2-S4, 17.2R3, 17.3R2-S2, 17.3R3, 17.4R1-S3, 17.4R2, 18.1R2, 18.2R1, 18.2X75-D5 and all subsequent releases.

This issue is being tracked as PR 1339567 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:
2018-10-10: Initial publication

CVSS Score:
8.8 (CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Severity Level:
High

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