Description
A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.
Published: 2021-03-12
Score: 9.8 Critical
EPSS: 3.8% Low
KEV: No
AI Analysis

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Remediation

No solution or workaround provided in the CVE record.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-7670 A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.
Ubuntu USN Ubuntu USN USN-5029-1 GnuTLS vulnerabilities
References
Link Providers
https://bugzilla.redhat.com/show_bug.cgi?id=1922276 cve-icon cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-398330.html cve-icon
https://gitlab.com/gnutls/gnutls/-/issues/1151 cve-icon
https://lists.apache.org/thread.html/r50661d6f0082709aad9a584431b59ec364f9974b63b07e0800230168%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r5d4001031e7790d8c6396c499522b4ed2aab782da87b1a14184793bb%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r5f88bed447742fcc5c47bf1c7be965ef450131914a6e1f85feba2779%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r6ac143ba6dd98bd4bf6bf010d46e56e254056459721ba18822d611f7%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r9cbc69e57276413788e90a6ee16c7c034ea4258d31935b70db2bd158%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rcd70a4c88a47a75fd2d5f3ffb7cee8c2a18c713320bd90fdcb57495f%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rf5e1256d870193def4a82ad89ab95e63943a313b5ff0d81aa87e4532%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rfd5273d72d244178441e6904a2f2b41a3268f569e8092ea0b3b2bb20%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OSLAE6PP33A7VYRYMYMUVB3U6B26GZER/ cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2021-20231 cve-icon
https://security.netapp.com/advisory/ntap-20210416-0005/ cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2021-20231 cve-icon
https://www.gnutls.org/security-new.html#GNUTLS-SA-2021-03-10 cve-icon cve-icon cve-icon
History

Wed, 14 Oct 2026 11:30:00 +0000

Type Values Removed Values Added
References

Subscriptions

Fedoraproject Fedora
Gnu Gnutls
Netapp Active Iq Unified Manager E-series Performance Analyzer
Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-14T10:04:12.446Z

Reserved: 2020-12-17T00:00:00.000Z

Link: CVE-2021-20231

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-03-12T19:15:13.037

Modified: 2026-10-14T11:16:51.423

Link: CVE-2021-20231

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-03-12T09:49:00Z

Links: CVE-2021-20231 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses