CVE-2021-20232

CRITICAL

9.8

CVSS Severity Score

EPSS Score0.0990%

EPSS Percentile29.39th

PublishedMar 12, 2021

Last ModifiedDec 3, 2025

Vulnerability Description

A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.

Affected Platforms (CPE)

📦

Gnu

Gnutls

>= 3.6.3 and < 3.7.1

💻

Redhat

Enterprise Linux

= 8.0

💻

Fedoraproject

Fedora

= 34

References & Advisories

🔗 https://bugzilla.redhat.com/show_bug.cgi?id=1922275

🔗 https://lists.apache.org/thread.html/r50661d6f0082709aad9a584431b59ec364f9974b63b07e0800230168%40%3Cissues.spark.apache.org%3E

🔗 https://lists.apache.org/thread.html/r5d4001031e7790d8c6396c499522b4ed2aab782da87b1a14184793bb%40%3Cissues.spark.apache.org%3E

🔗 https://lists.apache.org/thread.html/r5f88bed447742fcc5c47bf1c7be965ef450131914a6e1f85feba2779%40%3Cissues.spark.apache.org%3E

🔗 https://lists.apache.org/thread.html/r6ac143ba6dd98bd4bf6bf010d46e56e254056459721ba18822d611f7%40%3Cissues.spark.apache.org%3E

🔗 https://lists.apache.org/thread.html/r9cbc69e57276413788e90a6ee16c7c034ea4258d31935b70db2bd158%40%3Cissues.spark.apache.org%3E

🔗 https://lists.apache.org/thread.html/rcd70a4c88a47a75fd2d5f3ffb7cee8c2a18c713320bd90fdcb57495f%40%3Cissues.spark.apache.org%3E

🔗 https://lists.apache.org/thread.html/rf5e1256d870193def4a82ad89ab95e63943a313b5ff0d81aa87e4532%40%3Cissues.spark.apache.org%3E