CVE-2018-0009 SRX Series: Firewall bypass vulnerability when UUID with leading zeros is configured.
Attackers can bypass firewall rules on Juniper SRX devices if custom application UUIDs with leading zeros are configured, allowing unauthorized traffic flow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-0009?
CVE-2018-0009 is a medium-severity vulnerability in Juniper Junos, published on 10 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
On Juniper Networks SRX series devices, firewall rules configured to match custom application UUIDs starting with zeros can match all TCP traffic. Due to this issue, traffic that should have been blocked by other rules is permitted to flow through the device resulting in a firewall bypass condition. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D71 on SRX series; 12.3X48 versions prior to 12.3X48-D55 on SRX series; 15.1X49 versions prior to 15.1X49-D100 on SRX series.
Which versions are affected by CVE-2018-0009?
It affects 1 product.
Products include Juniper Junos.
How do I fix CVE-2018-0009?
No fix has been published for CVE-2018-0009 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-0009 being exploited?
There is no known exploitation of CVE-2018-0009 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-w85x-f52c-wvf8.