Juniper Junos RPD Draft-Rosen MVPN Control Packet input validation

Summaryinfo

A vulnerability was found in Juniper Junos and classified as critical. Affected by this issue is some unknown functionality of the component RPD. Such manipulation as part of Draft-Rosen MVPN Control Packet leads to input validation. This vulnerability is uniquely identified as CVE-2018-0045. The attack can only be initiated within the local network. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Juniper Junos (Router Operating System) (the affected version is unknown). Affected by this issue is an unknown code of the component RPD. The manipulation as part of a Draft-Rosen MVPN Control Packet leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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

The bug was discovered 10/10/2018. The weakness was disclosed 10/10/2018 (Website). The advisory is shared for download at kb.juniper.net. This vulnerability is handled as CVE-2018-0045 since 11/15/2017. The exploitation is known to be easy. The attack needs to be initiated within the local network. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 43616 (Juniper Junos Remote Code Execution And Denial Of Service Vulnerability(JSA10879)).

Upgrading eliminates this vulnerability.

The entries VDB-125196, VDB-125190, VDB-125195 and VDB-125191 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Router Operating System

Vendor

• Juniper

Name

• Junos

License

• commercial

Website

• Vendor: https://www.juniper.net/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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