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medium·Product Based Web Vulnerabilities·Updated Jan 3, 2024

CVE-2021-20031 Scanner

CVE-2021-20031 scanner - Host Header Injection vulnerability in SonicOS

Est. Time~10 seconds
Scan TypeSingle Scan
Targetsdomain, ipv4, subdomain
CostFree
3.4k
Times Used
continuous scan runs
4.2k
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
CVECVE-2021-20031
6.1
CVSS

A Host Header Redirection vulnerability in SonicOS potentially allows a remote attacker to redirect firewall management users to arbitrary web domains.

Attack Vector
-
Privileges Req.
-
User Interaction
-
Affected
SonicOSby SonicWall
7.0.1-R1262 and earlier
Updated Aug 21, 2026View on NVD →
Detail

SonicOS is a network security operating system designed for use by organizations of all sizes. It is a flexible and scalable solution that can be customized to meet the specific security needs of businesses ranging from small startups to large enterprises. SonicOS provides features such as network and application firewalls, VPN access, intrusion prevention, anti-malware protection, and SSL offloading. Its primary purpose is to secure networks from cyber attacks by providing an all-in-one solution to protect against various types of threats.

CVE-2021-20031 is a vulnerability that was recently discovered in SonicOS. This vulnerability, if exploited, can potentially allow a remote attacker to redirect firewall management users to arbitrary web domains. This means that an attacker can redirect users to fake websites that can steal their login credentials or spread malware. The vulnerability occurs due to the improper handling of host headers in SonicOS.

The exploitation of CVE-2021-20031 can lead to severe consequences for businesses. An attacker can gain unauthorized access to sensitive data or steal confidential information. Cybercriminals can also spread malware or viruses throughout a network, causing significant damage to the system. Moreover, it can lead to financial loss or reputational damage to the company.

Thanks to the pro features of the s4e.io platform, readers of this article can easily and quickly learn about vulnerabilities in their digital assets. Our platform provides comprehensive vulnerability scanning and assessment services that help businesses identify and remediate security weaknesses in their IT infrastructure. By leveraging our powerful features, businesses can proactively protect their assets from cyber threats and stay one step ahead of attackers. Don't wait until it's too late- take control of your network security today with s4e.io.

 

REFERENCES

Solution Advice

To protect against this vulnerability, there are a few precautions that can be taken. These include:

  • Applying the firmware update provided by SonicWall as soon as possible.
  • Restricting access to SonicOS management interfaces to authorized personnel only.
  • Regularly monitoring network traffic logs for any suspicious activity.
  • Implementing multi-factor authentication for access to SonicOS management interfaces.
  • Conducting regular vulnerability assessments and penetration testing of SonicOS installations.

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