CVE-2018-0035 Junos OS: QFX5200 and QFX10002: Unintended ONIE partition was shipped with certain Junos OS .bin and .iso images
Attackers can gain root access via an unintended ONIE partition on specific Juniper switches, allowing them to wipe configurations and bypass authentication.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-0035?
CVE-2018-0035 is a medium-severity authentication bypass vulnerability in Juniper Junos, published on 11 Jul 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
QFX5200 and QFX10002 devices that have been shipped with Junos OS 15.1X53-D21, 15.1X53-D30, 15.1X53-D31, 15.1X53-D32, 15.1X53-D33 and 15.1X53-D60 or have been upgraded to these releases using the .bin or .iso images may contain an unintended additional Open Network Install Environment (ONIE) partition. This additional partition allows the superuser to reboot to the ONIE partition which will wipe out the content of the Junos partition and its configuration. Once rebooted, the ONIE partition will not have root password configured, thus any user can access the console or SSH, using an IP address acquired from DHCP, as root without password. Once the device has been shipped or upgraded with the ONIE partition installed, the issue will persist. Simply upgrading to higher release via the CLI will not resolve the issue. No other Juniper Networks products or platforms are affected by this issue.
Which versions are affected by CVE-2018-0035?
It affects 1 product.
Products include Juniper Junos.
How do I fix CVE-2018-0035?
No fix has been published for CVE-2018-0035 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2018-0035 being exploited?
There is no known exploitation of CVE-2018-0035 in the wild and no public exploit code.
Other vulnerabilities in Juniper Junos
- CVE-2023-36845 Juniper Junos OS EX Series and SRX Series PHP External Variable Modification
- CVE-2020-1631 Juniper Junos OS Path Traversal
- CVE-2025-21590 Juniper Junos OS Improper Isolation or Compartmentalization
- CVE-2023-36851 Juniper Junos OS SRX Series Missing Authentication for Critical Function
- CVE-2023-36844 Juniper Junos OS EX Series PHP External Variable Modification
Sources
Also known as GHSA-g949-ppgf-vg49.