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CVE-2021-4209
Published: Aug 24, 2022
Modified: Aug 3, 2024
PUBLISHED
Description
A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.
| Vendor | Product | Versions |
|---|---|---|
n/a | GnuTLS | affected Fixed in gnutls v3.7.3 |
Weaknesses (CWE)
References
https://gitlab.com/gnutls/gnutls/-/issues/1306
x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=2044156
x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2021-4209
x_refsource_MISC
https://gitlab.com/gnutls/gnutls/-/merge_requests/1503
x_refsource_MISC
https://security.netapp.com/advisory/ntap-20220915-0005/
x_refsource_CONFIRM
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