CVE-2018-0410 : What You Need to Know
Learn about CVE-2018-0410, a vulnerability in Cisco's AsyncOS Software for Web Security Appliances that could allow remote attackers to exhaust system memory, causing a denial of service (DoS) condition.
Cisco Systems, Inc. AsyncOS Software for Cisco Web Security Appliances is vulnerable to a flaw in its web proxy functionality, potentially leading to a denial of service (DoS) attack. This CVE was published on August 15, 2018.
Understanding CVE-2018-0410
This CVE identifies a vulnerability in Cisco's AsyncOS Software for Web Security Appliances that could be exploited by remote attackers to exhaust system memory, causing a DoS condition.
What is CVE-2018-0410?
The vulnerability stems from improper memory resource handling for TCP connections to a targeted device by the affected software. Attackers can exploit this by establishing numerous TCP connections to the device's data interface using IPv4 or IPv6, depleting system memory and halting new connections.
The Impact of CVE-2018-0410
The vulnerability allows unauthorized remote attackers to deplete system memory, leading to a DoS situation on the affected system. Manual intervention may be required to recover the system.
Technical Details of CVE-2018-0410
Cisco's AsyncOS Software for Web Security Appliances is susceptible to a memory exhaustion DoS vulnerability.
Vulnerability Description
The flaw in the web proxy functionality allows attackers to exhaust system memory, causing the affected system to stop processing new connections.
Affected Systems and Versions
- Product: AsyncOS Software for Cisco Web Security Appliances
- Vendor: Cisco Systems, Inc.
- Affected Version: Unspecified
Exploitation Mechanism
- Attackers exploit the vulnerability by establishing a large number of TCP connections to the data interface of the affected device using IPv4 or IPv6.
Mitigation and Prevention
To address CVE-2018-0410, follow these steps:
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor network traffic for any suspicious activity.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update and patch software to mitigate known vulnerabilities.
- Conduct security training for employees to recognize and report potential threats.
Patching and Updates
- Cisco has likely released patches or updates to address this vulnerability. Ensure that your systems are up to date with the latest security fixes.