Home/CVE/OpenVPN versions before 2.3.3 and 2.4.x before 2.4.4 are vulnerable to a buffer overflow vulnerability when key-method 1
CVE

CVE-2017-12166

OpenVPN versions before 2.3.3 and 2.4.x before 2.4.4 are vulnerable to a buffer overflow vulnerability when key-method 1

OpenVPN versions before 2.3.3 and 2.4.x before 2.4.4 are vulnerable to a buffer overflow vulnerability when key-method 1 is used, possibly resulting in code execution.

CRITICAL · CVSS 9.8 EPSS 0.00995
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

3
openvpn< 2.3.18
openvpn>= 2.4.0 and < 2.4.4
debian linuxall versions
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Oct 2017 · 01:29 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

5
usnUSN-7340-1
suse-csafopenSUSE-SU-2024:11128-1
suse-csafSUSE-SU-2017:3177-1
suse-csafSUSE-SU-2017:2838-1
suse-csafSUSE-SU-2017:2839-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/101153Third Party AdvisoryURL RepurposedVDB Entry
http://www.securitytracker.com/id/1039470Third Party AdvisoryURL RepurposedVDB Entry
https://community.openvpn.net/openvpn/wiki/CVE-2017-12166PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00002.htmlMailing ListThird Party Advisory
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