Critical severity · published May 12, 2020
CVE-2020-12823
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…
9.8
CVSS
4.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.7% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
FE
Fedora · Fedoraproject
30; 31; 32 · source: NVD
LE
Leap · Opensuse
15.1; 15.2 · source: NVD
OP
Openconnect · Infradead
8.09 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12823
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12823
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00039.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00056.html
Exploit
https://bugs.gentoo.org/721570
Patch
https://gitlab.com/openconnect/openconnect/-/merge_requests/108
Mailing List
https://lists.debian.org/debian-lts-announce/2020/05/msg00015.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25MFX4AZE7RDCUWOL4ZOE73YBOPUMQDX/
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