Описание
Security update for openvpn
This update for openvpn fixes the following issues:
- CVE-2020-15078: Fixed authentication bypass with deferred authentication (bsc#1185279).
- CVE-2020-11810: Fixed race condition between allocating peer-id and initializing data channel key (bsc#1169925).
- CVE-2018-7544: Fixed cross-protocol scripting issue that was discovered in the management interface (bsc#1085803).
This update was imported from the SUSE:SLE-15:Update update project.
Список пакетов
openSUSE Leap 15.2
Ссылки
- E-Mail link for openSUSE-SU-2021:0734-1
- SUSE Security Ratings
- SUSE Bug 1085803
- SUSE Bug 1169925
- SUSE Bug 1185279
- SUSE CVE CVE-2018-7544 page
- SUSE CVE CVE-2020-11810 page
- SUSE CVE CVE-2020-15078 page
Описание
** DISPUTED ** A cross-protocol scripting issue was discovered in the management interface in OpenVPN through 2.4.5. When this interface is enabled over TCP without a password, and when no other clients are connected to this interface, attackers can execute arbitrary management commands, obtain sensitive information, or cause a denial of service (SIGTERM) by triggering XMLHttpRequest actions in a web browser. This is demonstrated by a multipart/form-data POST to http://localhost:23000 with a "signal SIGTERM" command in a TEXTAREA element. NOTE: The vendor disputes that this is a vulnerability. They state that this is the result of improper configuration of the OpenVPN instance rather than an intrinsic vulnerability, and now more explicitly warn against such configurations in both the management-interface documentation, and with a runtime warning.
Затронутые продукты
Ссылки
- CVE-2018-7544
- SUSE Bug 1085803
Описание
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.
Затронутые продукты
Ссылки
- CVE-2020-11810
- SUSE Bug 1169925
Описание
OpenVPN 2.5.1 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks.
Затронутые продукты
Ссылки
- CVE-2020-15078
- SUSE Bug 1185279