CVE-2020-11810
CVE-2020-11810
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
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.
CVSS 3.7 · Faible · EPSS 1,7% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: system
Produits et versions concernés
n/a
- Versions du logiciel
- n/a: Concernée
Aucun correctif publié
openvpn Debian:12
- Plages de versions concernées
- ECOSYSTEM: < 2.4.9-1
Mettez à jour vers 2.4.9-1
openvpn Debian:13
- Plages de versions concernées
- ECOSYSTEM: < 2.4.9-1
Mettez à jour vers 2.4.9-1
openvpn Debian:14
- Plages de versions concernées
- ECOSYSTEM: < 2.4.9-1
Mettez à jour vers 2.4.9-1
openvpn Ubuntu:18.04:LTS
- Versions du logiciel
- 2.4.3-4ubuntu1
- 2.4.4-1ubuntu1
- 2.4.4-2ubuntu1
- 2.4.4-2ubuntu1.1
- 2.4.4-2ubuntu1.2
- 2.4.4-2ubuntu1.3
- Plages de versions concernées
- ECOSYSTEM: < 2.4.4-2ubuntu1.5
Mettez à jour vers 2.4.4-2ubuntu1.5
openvpn Ubuntu:20.04:LTS
- Versions du logiciel
- 2.4.7-1ubuntu2
- Plages de versions concernées
- ECOSYSTEM: < 2.4.7-1ubuntu2.20.04.2
Mettez à jour vers 2.4.7-1ubuntu2.20.04.2
Sources originales
- https://github.com/OpenVPN/openvpn/commit/37bc691e7d26ea4eb61a8a434ebd7a9ae76225ab
- https://security-tracker.debian.org/tracker/CVE-2020-11810
- https://bugzilla.suse.com/show_bug.cgi?id=1169925
- https://community.openvpn.net/openvpn/ticket/1272
- https://patchwork.openvpn.net/patch/1079/
- 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://lists.debian.org/debian-lts-announce/2022/05/msg00002.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-11810