Bug 1922276 (CVE-2021-20231) - CVE-2021-20231 gnutls: Use after free in client key_share extension
Summary: CVE-2021-20231 gnutls: Use after free in client key_share extension
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-20231
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: Red Hat1927596 Red Hat1927597 Embargoed1927598 1938147 1938148
Blocks: Embargoed1922277 Red Hat1926232
TreeView+ depends on / blocked
 
Reported: 2021-01-29 15:18 UTC by Pedro Sampaio
Modified: 2022-11-11 10:43 UTC (History)
15 users (show)

Fixed In Version: gnutls 3.7.1
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and denial of service.
Clone Of:
Environment:
Last Closed: 2021-11-09 20:21:37 UTC

Attachments (Terms of Use)


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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:4451 0 None None None 2021-11-09 18:50:10 UTC

Description Pedro Sampaio 2021-01-29 15:18:30 UTC 
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.
Comment 3 Huzaifa S. Sidhpurwala 2021-03-12 09:49:56 UTC 
External References:

https://www.gnutls.org/security-new.html#GNUTLS-SA-2021-03-10
Comment 4 Huzaifa S. Sidhpurwala 2021-03-12 09:55:03 UTC 
Created gnutls tracking bugs for this issue:

Affects: fedora-all [bug 1938147]


Created mingw-gnutls tracking bugs for this issue:

Affects: fedora-all [bug 1938148]
Comment 5 Huzaifa S. Sidhpurwala 2021-03-12 10:07:17 UTC 
Acknowledgments:

Name: GnuTLS project
Comment 6 Huzaifa S. Sidhpurwala 2021-03-12 10:12:16 UTC 
Upstream commit: https://gitlab.com/gnutls/gnutls/-/commit/15beb4b193b2714d88107e7dffca781798684e7e
Comment 8 errata-xmlrpc 2021-11-09 18:50:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4451 https://access.redhat.com/errata/RHSA-2021:4451
Comment 9 Product Security DevOps Team 2021-11-09 20:21:34 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-20231
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