SB2021101206 - Spoofing attack in SonicWall SonicOS
Published: October 12, 2021
Security Bulletin ID
SB2021101206
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Neutralization of HTTP Headers for Scripting Syntax (CVE-ID: CVE-2021-20031)
CWE-ID: CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear
The vulnerability allows a remote attacker to perform a spoofing attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing HTTP headers. A remote attacker can send a specially crafted HTTP response with arbitrary Host header value and redirect firewall management users to arbitrary web domains.
Remediation
Install update from vendor's website.