CVE-2017-7521
Published: 21 June 2017
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().
Notes
| Author | Note |
|---|---|
| leosilva | as debian wheezy, precise-esm is not affected, code not present. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
openvpn Launchpad, Ubuntu, Debian |
artful |
Released
(2.4.0-5ubuntu2)
|
| trusty |
Released
(2.3.2-7ubuntu3.2)
|
|
| upstream |
Released
(2.4.3, 2.3.17)
|
|
| xenial |
Released
(2.3.10-1ubuntu2.1)
|
|
| yakkety |
Released
(2.3.11-1ubuntu2.1)
|
|
| zesty |
Released
(2.4.0-4ubuntu1.3)
|
|
|
Patches: upstream: https://github.com/OpenVPN/openvpn/commit/cb4e35ece4 upstream: https://github.com/OpenVPN/openvpn/commit/0400840671 upstream: https://github.com/OpenVPN/openvpn/commit/1dde0cd6e5 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.9 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |