CVE-2018-0018 Information disclosure in Junos OS
Crafted packets during IDP policy compilation allow attackers to bypass firewall rules and disclose information, potentially leading to further compromise of protected devices.
- 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-2018-0018?
CVE-2018-0018 is a high-severity vulnerability in Juniper Junos, published on 11 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
On SRX Series devices during compilation of IDP policies, an attacker sending specially crafted packets may be able to bypass firewall rules, leading to information disclosure which an attacker may use to gain control of the target device or other internal devices, systems or services protected by the SRX Series device. This issue only applies to devices where IDP policies are applied to one or more rules. Customers not using IDP policies are not affected. Depending on if the IDP updates are automatic or not, as well as the interval between available updates, an attacker may have more or less success in performing reconnaissance or bypass attacks on the victim SRX Series device or protected devices. ScreenOS with IDP is not vulnerable to this issue. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D60 on SRX; 12.3X48 versions prior to 12.3X48-D35 on SRX; 15.1X49 versions prior to 15.1X49-D60 on SRX.
Weakness: CWE-200
Which versions are affected by CVE-2018-0018?
It affects 1 product.
Products include Juniper Junos.
How do I fix CVE-2018-0018?
No fix has been published for CVE-2018-0018 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-0018 being exploited?
There is no known exploitation of CVE-2018-0018 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-g8gw-r224-pqqg.