CVE-2021-20031 is a vulnerability in SonicWall Sonicos
Published on October 12, 2021
A Host Header Redirection vulnerability in SonicOS potentially allows a remote attacker to redirect firewall management users to arbitrary web domains.
Weakness Type
What is an Open Redirect Vulnerability?
A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. An http parameter may contain a URL value and could cause the web application to redirect the request to the specified URL. By modifying the URL value to a malicious site, an attacker may successfully launch a phishing scam and steal user credentials. Because the server name in the modified link is identical to the original site, phishing attempts have a more trustworthy appearance.
CVE-2021-20031 has been classified to as an Open Redirect vulnerability or weakness.
Products Associated with CVE-2021-20031
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Affected Versions
SonicWall SonicOS:- Version 7.0.1-R1262 and earlier is affected.
- Version 7.0.1-R1283 and earlier is affected.
- Version 7.0.1-R579 and earlier is affected.
- Version 6.5.4.7 and earlier is affected.
- Version 6.5.1.12 and earlier is affected.
- Version 6.0.5.3-94o and earlier is affected.
- Version 6.5.4.4-44V-21-987 and earlier is affected.
- Version 5.9.1.13 and earlier is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.