CVE-2020-11810
OpenVPN Denial of Serviceycastle Injection
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.
INFO
Published Date :
April 27, 2020, 3:15 p.m.
Last Modified :
Nov. 7, 2023, 3:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
2.2
Affected Products
The following products are affected by CVE-2020-11810
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-11810.
| URL | Resource |
|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=1169925 | Issue Tracking Third Party Advisory |
| https://community.openvpn.net/openvpn/ticket/1272 | Exploit Vendor Advisory |
| https://github.com/OpenVPN/openvpn/commit/37bc691e7d26ea4eb61a8a434ebd7a9ae76225ab | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGHHV4YZANZW45KZTJJGVGPFMSXYRCKZ/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JII7RYYYRBPQNEGGVSOXCM7JUZ43T3VH/ | |
| https://patchwork.openvpn.net/patch/1079/ | Patch Vendor Advisory |
| https://security-tracker.debian.org/tracker/CVE-2020-11810 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-11810 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-11810 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGHHV4YZANZW45KZTJJGVGPFMSXYRCKZ/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JII7RYYYRBPQNEGGVSOXCM7JUZ43T3VH/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/FGHHV4YZANZW45KZTJJGVGPFMSXYRCKZ/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/JII7RYYYRBPQNEGGVSOXCM7JUZ43T3VH/ -
Modified Analysis by [email protected]
May. 12, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html Mailing List, Third Party Advisory -
CVE Modified by [email protected]
May. 03, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html [No Types Assigned] -
CPE Deprecation Remap by [email protected]
Aug. 18, 2020
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
May. 14, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=1169925 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=1169925 Issue Tracking, Third Party Advisory Changed Reference Type https://community.openvpn.net/openvpn/ticket/1272 No Types Assigned https://community.openvpn.net/openvpn/ticket/1272 Exploit, Vendor Advisory Changed Reference Type https://github.com/OpenVPN/openvpn/commit/37bc691e7d26ea4eb61a8a434ebd7a9ae76225ab No Types Assigned https://github.com/OpenVPN/openvpn/commit/37bc691e7d26ea4eb61a8a434ebd7a9ae76225ab Patch, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/FGHHV4YZANZW45KZTJJGVGPFMSXYRCKZ/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/FGHHV4YZANZW45KZTJJGVGPFMSXYRCKZ/ Mailing List, Patch, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/JII7RYYYRBPQNEGGVSOXCM7JUZ43T3VH/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/JII7RYYYRBPQNEGGVSOXCM7JUZ43T3VH/ Mailing List, Patch, Third Party Advisory Changed Reference Type https://patchwork.openvpn.net/patch/1079/ No Types Assigned https://patchwork.openvpn.net/patch/1079/ Patch, Vendor Advisory Changed Reference Type https://security-tracker.debian.org/tracker/CVE-2020-11810 No Types Assigned https://security-tracker.debian.org/tracker/CVE-2020-11810 Third Party Advisory Added CWE NIST CWE-362 Added CPE Configuration OR *cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:* versions from (including) 2.4.0 up to (excluding) 2.4.9 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 03, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/JII7RYYYRBPQNEGGVSOXCM7JUZ43T3VH/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 29, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/FGHHV4YZANZW45KZTJJGVGPFMSXYRCKZ/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-11810 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-11810
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.50 }} -0.00%
score
0.76765
percentile