NordVPN 6.19.6 contains a denial of service vulnerability that allows local attackers to crash the application by submitting an excessively long string in the email input field. Attackers can paste a buffer of 100,000 characters into the email field during login to trigger an application crash.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://downloads.nordcdn.com/apps/windows/10/NordVPN/latest/NordVPNSetup.exe
disclosure@vulncheck.com
https://nordvpn.com/
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https://www.exploit-db.com/exploits/46343
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/nordvpn-denial-of-service-via-email-field-…
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