CVE-2021-43791

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Summary

CVECVE-2021-43791
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-12-02 01:15:00 UTC
Updated2021-12-03 18:09:00 UTC
DescriptionZulip is an open source group chat application that combines real-time chat with threaded conversations. In affected versions expiration dates on the confirmation objects associated with email invitations were not enforced properly in the new account registration flow. A confirmation link takes a user to the check_prereg_key_and_redirect endpoint, before getting redirected to POST to /accounts/register/. The problem was that validation was happening in the check_prereg_key_and_redirect part and not in /accounts/register/ - meaning that one could submit an expired confirmation key and be able to register. The issue is fixed in Zulip 4.8. There are no known workarounds and users are advised to upgrade as soon as possible.

Risk And Classification

Problem Types: CWE-613

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Zulip Zulip All All All All

References

ReferenceSourceLinkTags
CVE-2021-43791: Validate confirmation keys in /accounts/register/ cod… · zulip/zulip@a014ef7 · GitHub MISC github.com
Ineffective expiration validation for invitation links · Advisory · zulip/zulip · GitHub CONFIRM github.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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