Rapid7 Vulnerability & Exploit Database

SUSE: CVE-2020-11810: SUSE Linux Security Advisory

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

SUSE: CVE-2020-11810: SUSE Linux Security Advisory

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
04/13/2020
Created
05/20/2021
Added
05/18/2021
Modified
10/22/2021

Description

An issue was discovered in OpenVPN 2.4.x before 2.4.9. An attacker can inject a data channel v2 (P_DATA_V2) packet using a victim's peer-id. Normally such packets are dropped, but if this packet arrives before the data channel crypto parameters have been initialized, the victim's connection will be dropped. This requires careful timing due to the small time window (usually within a few seconds) between the victim client connection starting and the server PUSH_REPLY response back to the client. This attack will only work if Negotiable Cipher Parameters (NCP) is in use.

Solution(s)

  • suse-upgrade-openvpn
  • suse-upgrade-openvpn-auth-pam-plugin
  • suse-upgrade-openvpn-devel
  • suse-upgrade-openvpn-down-root-plugin

References

  • SUSE-SU-2021:1577-1
  • CVE-2020-11810
  • USN-4933-1

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;