Описание
NetworkManager-l2tp through 1.52.4, fixed in 1.52.6, contains a privilege escalation vulnerability that allows local users with permission to create VPN connections to execute arbitrary code as root by injecting pppd options through a crafted VPN username. Attackers can embed a double-quote character or whitespace in the username to break out of the pppd options file quoting context and include the pppd plugin directive, causing the privileged pppd process to load an attacker-controlled shared object.
A flaw was found in NetworkManager-l2tp. This privilege escalation vulnerability allows local users, who have permissions to create VPN connections, to execute arbitrary code as root. This is achieved by injecting options into the pppd (Point-to-Point Protocol Daemon) through a specially crafted VPN username. An attacker can embed a double-quote character or whitespace in the username to bypass quoting in the pppd options file, enabling the pppd process to load an attacker-controlled shared object.
Отчет
This vulnerability is rated as Important because a local user with permissions to configure VPN settings can elevate privileges to root, resulting in complete system compromise. NetworkManager-l2tp is an optional plugin that is not installed or enabled by default on Red Hat Enterprise Linux, restricting impact to environments where L2TP VPN connectivity has been intentionally deployed. Furthermore, exploitation requires authorization to add or modify network connection profiles, meaning systems that restrict network management to administrators are not exposed to unprivileged escalation.
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Дополнительная информация
Статус:
EPSS
8.8 High
CVSS3
Связанные уязвимости
NetworkManager-l2tp through 1.52.4, fixed in 1.52.6, contains a privilege escalation vulnerability that allows local users with permission to create VPN connections to execute arbitrary code as root by injecting pppd options through a crafted VPN username. Attackers can embed a double-quote character or whitespace in the username to break out of the pppd options file quoting context and include the pppd plugin directive, causing the privileged pppd process to load an attacker-controlled shared object.
NetworkManager-l2tp through 1.52.4, fixed in 1.52.6, contains a privilege escalation vulnerability that allows local users with permission to create VPN connections to execute arbitrary code as root by injecting pppd options through a crafted VPN username. Attackers can embed a double-quote character or whitespace in the username to break out of the pppd options file quoting context and include the pppd plugin directive, causing the privileged pppd process to load an attacker-controlled shared object.
NetworkManager-l2tp through 1.52.4, fixed in 1.52.6, contains a privil ...
ALT-PU-2026-16225: package `NetworkManager-l2tp` update to version 1.52.6-alt0.p10.1
ALT-PU-2026-16090: package `NetworkManager-l2tp` update to version 1.52.6-alt1
EPSS
8.8 High
CVSS3