9.8
CRITICAL
CVE-2021-20232
Gnutls Use After Free Memory Corruption 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.

INFO

Published Date :

March 12, 2021, 7:15 p.m.

Last Modified :

Nov. 7, 2023, 3:29 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-20232 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-20232 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat enterprise_linux
1 Fedoraproject fedora
1 Gnu gnutls
: Total Affected Vendor : 3 | Products : 3
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-20232.

URL Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1922275 Issue Tracking Patch Third Party Advisory
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
https://lists.apache.org/thread.html/rfd5273d72d244178441e6904a2f2b41a3268f569e8092ea0b3b2bb20%40%3Cissues.spark.apache.org%3E
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OSLAE6PP33A7VYRYMYMUVB3U6B26GZER/
https://security.netapp.com/advisory/ntap-20210416-0005/ Third Party Advisory
https://www.gnutls.org/security-new.html#GNUTLS-SA-2021-03-10 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

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GitHubForSnap/ssmtp-gael

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Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-20232 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-20232 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OSLAE6PP33A7VYRYMYMUVB3U6B26GZER/ [No types assigned]
    Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/r5f88bed447742fcc5c47bf1c7be965ef450131914a6e1f85feba2779%40%3Cissues.spark.apache.org%3E [No types assigned]
    Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/rcd70a4c88a47a75fd2d5f3ffb7cee8c2a18c713320bd90fdcb57495f%40%3Cissues.spark.apache.org%3E [No types assigned]
    Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/r5d4001031e7790d8c6396c499522b4ed2aab782da87b1a14184793bb%40%3Cissues.spark.apache.org%3E [No types assigned]
    Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/r9cbc69e57276413788e90a6ee16c7c034ea4258d31935b70db2bd158%40%3Cissues.spark.apache.org%3E [No types assigned]
    Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/rfd5273d72d244178441e6904a2f2b41a3268f569e8092ea0b3b2bb20%40%3Cissues.spark.apache.org%3E [No types assigned]
    Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/rf5e1256d870193def4a82ad89ab95e63943a313b5ff0d81aa87e4532%40%3Cissues.spark.apache.org%3E [No types assigned]
    Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/r50661d6f0082709aad9a584431b59ec364f9974b63b07e0800230168%40%3Cissues.spark.apache.org%3E [No types assigned]
    Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/r6ac143ba6dd98bd4bf6bf010d46e56e254056459721ba18822d611f7%40%3Cissues.spark.apache.org%3E [No types assigned]
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/OSLAE6PP33A7VYRYMYMUVB3U6B26GZER/
    Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/r5f88bed447742fcc5c47bf1c7be965ef450131914a6e1f85feba2779@%3Cissues.spark.apache.org%3E
    Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/rcd70a4c88a47a75fd2d5f3ffb7cee8c2a18c713320bd90fdcb57495f@%3Cissues.spark.apache.org%3E
    Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/r5d4001031e7790d8c6396c499522b4ed2aab782da87b1a14184793bb@%3Cissues.spark.apache.org%3E
    Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/r9cbc69e57276413788e90a6ee16c7c034ea4258d31935b70db2bd158@%3Cissues.spark.apache.org%3E
    Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/rfd5273d72d244178441e6904a2f2b41a3268f569e8092ea0b3b2bb20@%3Cissues.spark.apache.org%3E
    Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/rf5e1256d870193def4a82ad89ab95e63943a313b5ff0d81aa87e4532@%3Cissues.spark.apache.org%3E
    Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/r50661d6f0082709aad9a584431b59ec364f9974b63b07e0800230168@%3Cissues.spark.apache.org%3E
    Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/r6ac143ba6dd98bd4bf6bf010d46e56e254056459721ba18822d611f7@%3Cissues.spark.apache.org%3E
  • Reanalysis by [email protected]

    May. 17, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* versions up to (excluding) 3.6.3 OR *cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* versions from (including) 3.6.3 up to (excluding) 3.7.1
  • Modified Analysis by [email protected]

    May. 12, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.apache.org/thread.html/r50661d6f0082709aad9a584431b59ec364f9974b63b07e0800230168@%3Cissues.spark.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r50661d6f0082709aad9a584431b59ec364f9974b63b07e0800230168@%3Cissues.spark.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r5d4001031e7790d8c6396c499522b4ed2aab782da87b1a14184793bb@%3Cissues.spark.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r5d4001031e7790d8c6396c499522b4ed2aab782da87b1a14184793bb@%3Cissues.spark.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r5f88bed447742fcc5c47bf1c7be965ef450131914a6e1f85feba2779@%3Cissues.spark.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r5f88bed447742fcc5c47bf1c7be965ef450131914a6e1f85feba2779@%3Cissues.spark.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r6ac143ba6dd98bd4bf6bf010d46e56e254056459721ba18822d611f7@%3Cissues.spark.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r6ac143ba6dd98bd4bf6bf010d46e56e254056459721ba18822d611f7@%3Cissues.spark.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r9cbc69e57276413788e90a6ee16c7c034ea4258d31935b70db2bd158@%3Cissues.spark.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r9cbc69e57276413788e90a6ee16c7c034ea4258d31935b70db2bd158@%3Cissues.spark.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread.html/rcd70a4c88a47a75fd2d5f3ffb7cee8c2a18c713320bd90fdcb57495f@%3Cissues.spark.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rcd70a4c88a47a75fd2d5f3ffb7cee8c2a18c713320bd90fdcb57495f@%3Cissues.spark.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread.html/rf5e1256d870193def4a82ad89ab95e63943a313b5ff0d81aa87e4532@%3Cissues.spark.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rf5e1256d870193def4a82ad89ab95e63943a313b5ff0d81aa87e4532@%3Cissues.spark.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread.html/rfd5273d72d244178441e6904a2f2b41a3268f569e8092ea0b3b2bb20@%3Cissues.spark.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rfd5273d72d244178441e6904a2f2b41a3268f569e8092ea0b3b2bb20@%3Cissues.spark.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/OSLAE6PP33A7VYRYMYMUVB3U6B26GZER/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/OSLAE6PP33A7VYRYMYMUVB3U6B26GZER/ Mailing List, Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210416-0005/ No Types Assigned https://security.netapp.com/advisory/ntap-20210416-0005/ Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* versions up to (excluding) 3.7.1 OR *cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* versions up to (excluding) 3.6.3
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 30, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/r6ac143ba6dd98bd4bf6bf010d46e56e254056459721ba18822d611f7@%3Cissues.spark.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 29, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/rf5e1256d870193def4a82ad89ab95e63943a313b5ff0d81aa87e4532@%3Cissues.spark.apache.org%3E [No Types Assigned]
    Added Reference https://lists.apache.org/thread.html/r50661d6f0082709aad9a584431b59ec364f9974b63b07e0800230168@%3Cissues.spark.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 26, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/rfd5273d72d244178441e6904a2f2b41a3268f569e8092ea0b3b2bb20@%3Cissues.spark.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 25, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/r9cbc69e57276413788e90a6ee16c7c034ea4258d31935b70db2bd158@%3Cissues.spark.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 23, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/r5d4001031e7790d8c6396c499522b4ed2aab782da87b1a14184793bb@%3Cissues.spark.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 18, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/rcd70a4c88a47a75fd2d5f3ffb7cee8c2a18c713320bd90fdcb57495f@%3Cissues.spark.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 16, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210416-0005/ [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 14, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/r5f88bed447742fcc5c47bf1c7be965ef450131914a6e1f85feba2779@%3Cissues.spark.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 24, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/OSLAE6PP33A7VYRYMYMUVB3U6B26GZER/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 19, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1922275 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1922275 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://www.gnutls.org/security-new.html#GNUTLS-SA-2021-03-10 No Types Assigned https://www.gnutls.org/security-new.html#GNUTLS-SA-2021-03-10 Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* versions up to (excluding) 3.7.1
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-20232 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-20232 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.67 }} 0.10%

score

0.77458

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: