Back to Database
Status published
Critical
CVE-2020-12823
OpenConnect 8.09 has a buffer overflow, causing a denial of...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-12823
Credits & Attribution
No credits recorded in the NVD database.
References
- https://gitlab.com/openconnect/openconnect/-/merge_requests/108
- https://bugs.gentoo.org/721570
- https://lists.debian.org/debian-lts-announce/2020/05/msg00015.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYSXLXAPXD2T73T6JMHI5G2WP7KHAGMN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEVTIH5UFX35CC7MVSYBGRM3D66ACFD5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25MFX4AZE7RDCUWOL4ZOE73YBOPUMQDX/
- https://security.gentoo.org/glsa/202006-15
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00056.html
More from infradead
View All →CVE-2020-12105
OpenConnect through 8.08 mishandles negative return values from X509_check_ function...
Medium
5.9
CVE-2019-16239
process_http_response in OpenConnect before 8.05 has a Buffer Overflow when...
Critical
9.8
CVE-2013-7098
OpenConnect VPN client with GnuTLS before 5.02 contains a heap...
Critical
9.8
CVE-2012-6128
Multiple stack-based buffer overflows in http.c in OpenConnect before 4.08...
Medium
5
CVE-2012-3291
Heap-based buffer overflow in OpenConnect 3.18 allows remote servers to...
High
7.8
Affected Vendor
infradead
View all reports →Affected Software
openconnect, fedora, debian linux, leap
Vulnerable Versions:
8.09, 30, 31, 32, 8.0, 15.1, 15.2
Timeline
Official Publish:
May 12th, 2020
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.