Описание
A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.
A vulnerability was found in X.Org Server. This flaw occurs if a client explicitly destroys the compositor overlay window (aka COW), where Xserver leaves a dangling pointer to that window in the CompScreen structure, which will later trigger a use-after-free issue. The Overlay Window use-after-free issue can lead to a local privilege escalation vulnerability.
Отчет
Xorg server does not run with root privileges in Red Hat Enterprise Linux 8 and 9. Therefore, Red Hat Enterprise Linux 8 and 9 have been rated Moderate severity.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | tigervnc | Out of support scope | ||
| Red Hat Enterprise Linux 6 | xorg-x11-server | Out of support scope | ||
| Red Hat Enterprise Linux 7 | tigervnc | Fixed | RHSA-2023:1594 | 04.04.2023 |
| Red Hat Enterprise Linux 7 | xorg-x11-server | Fixed | RHSA-2023:1594 | 04.04.2023 |
| Red Hat Enterprise Linux 8 | tigervnc | Fixed | RHSA-2023:1551 | 04.04.2023 |
| Red Hat Enterprise Linux 8 | xorg-x11-server | Fixed | RHSA-2023:6916 | 14.11.2023 |
| Red Hat Enterprise Linux 8 | xorg-x11-server-Xwayland | Fixed | RHSA-2023:6917 | 14.11.2023 |
| Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions | tigervnc | Fixed | RHSA-2023:1600 | 04.04.2023 |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | tigervnc | Fixed | RHSA-2023:1549 | 03.04.2023 |
| Red Hat Enterprise Linux 8.2 Telecommunications Update Service | tigervnc | Fixed | RHSA-2023:1549 | 03.04.2023 |
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Дополнительная информация
Статус:
EPSS
7.8 High
CVSS3
Связанные уязвимости
A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.
A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.
A flaw was found in X.Org Server Overlay Window. A Use-After-Free may ...
EPSS
7.8 High
CVSS3