Описание
A use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently, ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the system by sending a specially crafted request.
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 with a 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 | xorg-x11-server | Fixed | RHSA-2024:1785 | 11.04.2024 |
| Red Hat Enterprise Linux 7 | tigervnc | Fixed | RHSA-2024:2080 | 29.04.2024 |
| Red Hat Enterprise Linux 8 | tigervnc | Fixed | RHSA-2024:2037 | 24.04.2024 |
| Red Hat Enterprise Linux 8 | xorg-x11-server | Fixed | RHSA-2024:3258 | 22.05.2024 |
| Red Hat Enterprise Linux 8 | tigervnc | Fixed | RHSA-2024:3261 | 22.05.2024 |
| Red Hat Enterprise Linux 8 | xorg-x11-server-Xwayland | Fixed | RHSA-2024:3343 | 23.05.2024 |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | tigervnc | Fixed | RHSA-2024:2041 | 24.04.2024 |
| Red Hat Enterprise Linux 8.2 Telecommunications Update Service | tigervnc | Fixed | RHSA-2024:2041 | 24.04.2024 |
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Дополнительная информация
Статус:
EPSS
7.8 High
CVSS3
Связанные уязвимости
A use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently, ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the system by sending a specially crafted request.
A use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently, ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the system by sending a specially crafted request.
A use-after-free vulnerability was found in the ProcRenderAddGlyphs() ...
EPSS
7.8 High
CVSS3