CVE-2018-0053

vSRX Series: A local authentication vulnerability may lead to full control of a vSRX instance while the system is booting.

Description

An authentication bypass vulnerability in the initial boot sequence of Juniper Networks Junos OS on vSRX Series may allow an attacker to gain full control of the system without authentication when the system is initially booted up. Affected releases are Juniper Networks Junos OS: 15.1X49 versions prior to 15.1X49-D30 on vSRX.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: Junos OS 15.1X49-D30, and all subsequent releases.

Workaround:

  • There are no viable workarounds for this issue. Methods which may reduce, but not eliminate, the risk for exploitation of this problem, and which does not resolve the underlying problem include: • Restrict access to the hypervisor to only trusted administrators. • Disallow all access to the 'physical instance' of the vSRX instance while it is initially booting by disabling connectivity to devices hosting the instance; e.g. console servers, etc.

Category

6.8
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA10887 vendor advisory
http://www.securitytracker.com/id/1041854 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2018-0053?
CVE-2018-0053 has been scored as a medium severity vulnerability.
How to fix CVE-2018-0053?
To fix CVE-2018-0053: The following software releases have been updated to resolve this specific issue: Junos OS 15.1X49-D30, and all subsequent releases.
Is CVE-2018-0053 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-0053 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-2018-0053?
CVE-2018-0053 affects Juniper Networks Junos OS.
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