vulnerability
FreeBSD: VID-3dd6ccf4-a3c6-11e7-a52e-0800279f2ff8 (CVE-2017-12166): OpenVPN -- out-of-bounds write in legacy key-method 1
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Sep 27, 2017 | Sep 28, 2017 | Dec 10, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Sep 27, 2017
Added
Sep 28, 2017
Modified
Dec 10, 2025
Description
Steffan Karger reports: The bounds check in read_key() was performed after using the value, instead of before. If 'key-method 1' is used, this allowed an attacker to send a malformed packet to trigger a stack buffer overflow. [...] Note that 'key-method 1' has been replaced by 'key method 2' as the default in OpenVPN 2.0 (released on 2005-04-17), and explicitly deprecated in 2.4 and marked for removal in 2.5. This should limit the amount of users impacted by this issue.
Solutions
freebsd-upgrade-package-openvpn-polarsslfreebsd-upgrade-package-openvpn-mbedtlsfreebsd-upgrade-package-openvpn
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