CVE-2017-10613

Junos OS: A kernel hang may occur due to a specific loopback filter action command

Description

A vulnerability in a specific loopback filter action command, processed in a specific logical order of operation, in a running configuration of Juniper Networks Junos OS, allows an attacker with CLI access and the ability to initiate remote sessions to the loopback interface with the defined action, to hang the kernel. Affected releases are Juniper Networks Junos OS 12.1X46 prior to 12.1X46-D55; 12.3X48 prior to 12.3X48-D35; 14.1 prior to 14.1R8-S4, 14.1R9; 14.1X53 prior to 14.1X53-D40; 14.2 prior to 14.2R4-S9, 14.2R7-S8, 14.2R8; 15.1 prior to 15.1F5-S3, 15.1F6, 15.1R4; 15.1X49 prior to 15.1X49-D60; 15.1X53 prior to 15.1X53-D47; 16.1 prior to 16.1R2. No other Juniper Networks products or platforms are affected by this issue.

Remediation

Workaround:

  • Discontinue the use of allowing remote sessions to be issued from the local device to reach loopback address(es). It is good security practice to limit the exploitable attack surface of critical infrastructure networking equipment. Use access lists or firewall filters to limit access to the device from trusted, administrative networks or hosts.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.04%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA10816 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-10613?
CVE-2017-10613 has been scored as a medium severity vulnerability.
How to fix CVE-2017-10613?
As a workaround for remediating CVE-2017-10613: Discontinue the use of allowing remote sessions to be issued from the local device to reach loopback address(es). It is good security practice to limit the exploitable attack surface of critical infrastructure networking equipment. Use access lists or firewall filters to limit access to the device from trusted, administrative networks or hosts.
Is CVE-2017-10613 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-10613 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-10613?
CVE-2017-10613 affects Juniper Networks Junos OS.
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