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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-4209 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://access.redhat.com/security/cve/CVE-2021-4209 CVE, Inc., Red Hat Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2044156 CVE, Inc., Red Hat Issue Tracking  Third Party Advisory 
https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 CVE, Inc., Red Hat Patch  Third Party Advisory 
https://gitlab.com/gnutls/gnutls/-/issues/1306 CVE, Inc., Red Hat Third Party Advisory 
https://gitlab.com/gnutls/gnutls/-/merge_requests/1503 CVE, Inc., Red Hat Third Party Advisory 
https://security.netapp.com/advisory/ntap-20220915-0005/ CVE, Inc., Red Hat Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference cwe source acceptance level NIST   Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-4209
NVD Published Date:
08/24/2022
NVD Last Modified:
11/21/2024
Source:
Red Hat, Inc.