CVE-2018-0018: SRX Series: A crafted packet may lead to information disclosure and firewall rule bypass during compilation of IDP policies.
First published: Wed Apr 11 2018(Updated: )
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.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Junos OS Evolved | =12.1x46 | |
| Junos OS Evolved | =12.1x46-d10 | |
| Junos OS Evolved | =12.1x46-d15 | |
| Junos OS Evolved | =12.1x46-d20 | |
| Junos OS Evolved | =12.1x46-d25 | |
| Junos OS Evolved | =12.1x46-d30 | |
| Junos OS Evolved | =12.1x46-d35 | |
| Junos OS Evolved | =12.1x46-d40 | |
| Junos OS Evolved | =12.1x46-d45 | |
| Junos OS Evolved | =12.1x46-d50 | |
| Junos OS Evolved | =12.1x46-d55 | |
| Juniper SRX100 | ||
| Juniper SRX110 | ||
| Juniper SRX1400 | ||
| Juniper SRX1500 | ||
| Juniper SRX210 | ||
| Juniper SRX220 | ||
| Juniper SRX240 | ||
| Juniper SRX300 | ||
| Juniper SRX320 | ||
| Juniper SRX340 | ||
| Juniper SRX3400 | ||
| Juniper SRX345 | ||
| Juniper SRX3600 | ||
| Juniper SRX4100 | ||
| Juniper SRX4200 | ||
| Juniper SRX5400 | ||
| Juniper SRX550 | ||
| Juniper SRX5600 | ||
| Juniper SRX5800 | ||
| Juniper SRX650 | ||
| Junos OS Evolved | =12.3x48 | |
| Junos OS Evolved | =12.3x48-d10 | |
| Junos OS Evolved | =12.3x48-d15 | |
| Junos OS Evolved | =12.3x48-d20 | |
| Junos OS Evolved | =12.3x48-d25 | |
| Junos OS Evolved | =12.3x48-d30 | |
| Junos OS Evolved | =15.1x49 | |
| Junos OS Evolved | =15.1x49-d10 | |
| Junos OS Evolved | =15.1x49-d20 | |
| Junos OS Evolved | =15.1x49-d30 | |
| Junos OS Evolved | =15.1x49-d35 | |
| Junos OS Evolved | =15.1x49-d40 | |
| Junos OS Evolved | =15.1x49-d45 | |
| Junos OS Evolved | =15.1x49-d50 |
Remedy
The following software releases have been updated to resolve this specific issue: 12.1X46-D60, 12.3X48-D35, 15.1X49-D60, 17.3R1, and all subsequent releases. Additionally, customers should download and apply the latest sigpack for IDP signatures.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2018-0018?
CVE-2018-0018 has been classified with a high severity, as it allows attackers to bypass firewall rules.
How does CVE-2018-0018 exploit the system?
CVE-2018-0018 exploits specially crafted packets to compromise the firewall policies during IDP policy compilation.
What versions of Juniper JUNOS are affected by CVE-2018-0018?
Affected versions include Junos 12.1x46, 12.3x48, and 15.1x49 among others.
How do I fix CVE-2018-0018?
To mitigate CVE-2018-0018, you should upgrade to the latest patched version of Junos firmware.
What are the potential consequences of CVE-2018-0018?
CVE-2018-0018 can lead to information disclosure that may enable an attacker to gain control over the device or internal network.
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