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CVE-2020-12823

Published: 12 May 2020

OpenConnect 8.09 has a buffer overflow, causing a denial of service (application crash) or possibly unspecified other impact, via crafted certificate data to get_cert_name in gnutls.c.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
openconnect
Launchpad, Ubuntu, Debian
bionic Needed

eoan Ignored
(end of life)
focal Needed

groovy Not vulnerable
(8.10-1)
hirsute Not vulnerable
(8.10-1)
impish Not vulnerable
(8.10-1)
jammy Not vulnerable
(8.10-1)
kinetic Not vulnerable
(8.10-1)
lunar Not vulnerable
(8.10-1)
mantic Not vulnerable
(8.10-1)
noble Not vulnerable
(8.10-1)
trusty Does not exist

upstream
Released (8.10-1)
xenial Needed

Patches:
upstream: https://gitlab.com/openconnect/openconnect/-/commit/eef4c1f9d24478aa1d2dd9ac7ec32efb2137f474

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H