#VU7539 Denial of service in Juniper Junos OS - CVE-2017-2347

Vulnerability identifier: #VU7539

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-2347

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description
The vulnerability allows an adjacent attacker to cause DoS condition on the target system.

The weakness exists due to improper input validation. An adjacent attacker can send a specially crafted MPLS ping packet to cause the target rpd daemon to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
The vulnerability is addressed in the following versions:
12.3X48-D50, 12.3X48-D55, 13.3R10, 14.1R4-S13, 14.1R8-S3, 14.1R9, 14.1X53-D42, 14.1X53-D50, 14.2R4-S8, 14.2R7-S6, 14.2R8, 15.1F2-S14, 15.1F5-S7, 15.1F6-S4, 15.1F7, 15.1R4-S7, 15.1R5-S1, 15.1R6, 15.1X49-D100, 15.1X53-D105, 15.1X53-D47, 15.1X53-D62, 15.1X53-D70, 16.1R3-S3, 16.1R4, 16.2R1, 17.1R1.

Vulnerable software versions

Juniper Junos OS: 12.3x48, 13.3, 14.1x53 - 14.1, 14.2, 15.1X49 - 15.1, 16.1

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External links
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10795

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.