CVE-2021-30120

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Summary

CVECVE-2021-30120
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-07-09 14:15:00 UTC
Updated2022-07-12 17:42:00 UTC
DescriptionKaseya VSA before 9.5.7 allows attackers to bypass the 2FA requirement. The need to use 2FA for authentication in enforce client-side instead of server-side and can be bypassed using a local proxy. Thus rendering 2FA useless. Detailed description --- During the login process, after the user authenticates with username and password, the server sends a response to the client with the booleans MFARequired and MFAEnroled. If the attacker has obtained a password of a user and used an intercepting proxy (e.g. Burp Suite) to change the value of MFARequered from True to False, there is no prompt for the second factor, but the user is still logged in.

Risk And Classification

Problem Types: CWE-669

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Kaseya Vsa All All All All

References

ReferenceSourceLinkTags
Kaseya VSA Limited Disclosure | DIVD CSIRT MISC csirt.divd.nl
404 Not Found CONFIRM csrit.divd.nl
404 Not Found CONFIRM csrit.divd.nl
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Discovered by Wietse Boonstra of DIVD

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