Описание
It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.
Пакеты
| Пакет | Статус | Версия исправления | Релиз | Тип |
|---|---|---|---|---|
| systemd | fixed | 242-1 | experimental | package |
| systemd | fixed | 242-4 | package | |
| systemd | ignored | buster | package | |
| systemd | ignored | stretch | package | |
| systemd | not-affected | jessie | package |
Примечания
https://github.com/systemd/systemd/commit/3c27973b13724ede05a06a5d346a569794cda433
https://github.com/systemd/systemd/commit/f69567cbe26d09eac9d387c0be0fc32c65a83ada
https://github.com/systemd/systemd/commit/9d880b70ba5c6ca83c82952f4c90e86e56c7b70c
https://github.com/systemd/systemd/commit/7445db6eb70e8d5989f481d0c5a08ace7047ae5b
https://github.com/systemd/systemd/commit/62aa29247c3d74bcec0607c347f2be23cd90675d
https://github.com/systemd/systemd/commit/bf65b7e0c9fc215897b676ab9a7c9d1c688143ba
https://bugs.chromium.org/p/project-zero/issues/detail?id=1771
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1814596
https://github.com/systemd/systemd-stable/pull/54 (backport for v241-stable)
Связанные уязвимости
It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.
It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.
It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.
It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.