CVE-2017-0303 : Security Advisory and Response
Learn about CVE-2017-0303 affecting F5 Networks, Inc. BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, GTM, Link Controller, PEM, and Websafe software versions 13.0.0, 12.0.0 - 12.1.2, and 11.5.1 - 11.6.1, leading to resource depletion and denial of service attacks. Find mitigation steps here.
F5 Networks, Inc. identified a vulnerability in various versions of BIG-IP software that could lead to resource depletion and denial of service attacks.
Understanding CVE-2017-0303
This CVE involves a specific issue within F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, GTM, Link Controller, PEM, and Websafe software versions 13.0.0, 12.0.0 to 12.1.2, and 11.5.1 to 11.6.1.
What is CVE-2017-0303?
In certain scenarios, connections managed by a Virtual Server with an associated SOCKS profile may not be properly cleaned up, potentially causing resource exhaustion and rendering the BIG-IP incapable of processing further connections.
The Impact of CVE-2017-0303
The vulnerability could result in a denial of service condition, where the affected system may become unable to handle additional connections, leading to service disruption.
Technical Details of CVE-2017-0303
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The issue arises when connections managed by a Virtual Server with a SOCKS profile are not adequately cleaned up, causing resource depletion over time.
Affected Systems and Versions
- Products: BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, GTM, Link Controller, PEM, Websafe
- Versions: 13.0.0, 12.0.0 - 12.1.2, 11.5.1 - 11.6.1
Exploitation Mechanism
The vulnerability can be exploited by creating connections managed by a Virtual Server with an associated SOCKS profile, which are not properly cleaned up, leading to resource exhaustion.
Mitigation and Prevention
To address CVE-2017-0303, follow these mitigation strategies:
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly.
- Monitor system resources for any signs of resource depletion.
Long-Term Security Practices
- Regularly review and update system configurations to prevent similar issues.
- Conduct security assessments to identify and address vulnerabilities proactively.
Patching and Updates
- Install the latest patches and updates provided by F5 Networks, Inc. to mitigate the vulnerability effectively.