Описание
An issue was discovered in SDDM before 0.19.0. It incorrectly starts the X server in a way that - for a short time period - allows local unprivileged users to create a connection to the X server without providing proper authentication. A local attacker can thus access X server display contents and, for example, intercept keystrokes or access the clipboard. This is caused by a race condition during Xauthority file creation.
An issue was discovered in SDDM before 0.19.0. It incorrectly starts the X server in a way that - for a short time period - allows local unprivileged users to create a connection to the X server without providing proper authentication. A local attacker can thus access X server display contents and, for example, intercept keystrokes or access the clipboard. This is caused by a race condition during Xauthority file creation.
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2020-28049
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-28049
- https://github.com/sddm/sddm/blob/v0.19.0/ChangeLog
- https://github.com/sddm/sddm/releases
- https://lists.debian.org/debian-lts-announce/2020/11/msg00009.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GT3EX5NSQJJAKY63ENSMEDX6NYZLYY3S
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GT3EX5NSQJJAKY63ENSMEDX6NYZLYY3S
- https://security.gentoo.org/glsa/202402-02
- https://www.debian.org/security/2020/dsa-4783
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00031.html
Связанные уязвимости
An issue was discovered in SDDM before 0.19.0. It incorrectly starts the X server in a way that - for a short time period - allows local unprivileged users to create a connection to the X server without providing proper authentication. A local attacker can thus access X server display contents and, for example, intercept keystrokes or access the clipboard. This is caused by a race condition during Xauthority file creation.
An issue was discovered in SDDM before 0.19.0. It incorrectly starts the X server in a way that - for a short time period - allows local unprivileged users to create a connection to the X server without providing proper authentication. A local attacker can thus access X server display contents and, for example, intercept keystrokes or access the clipboard. This is caused by a race condition during Xauthority file creation.
An issue was discovered in SDDM before 0.19.0. It incorrectly starts t ...
Уязвимость компонента X server экранного менеджера SDDM, связанная с одновременным выполнением с использованием общего ресурса с неправильной синхронизацией, позволяющая нарушителю получить доступ к конфиденциальным данным и нарушить их целостность