Описание
A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.
Отчет
This vulnerability is rated as an important severity because the flaw exists in the XFIXES extension, specifically in the XFixesSetClientDisconnectMode handler. The handler does not validate the request length field correctly, allowing a client to read beyond the intended bounds of the input buffer. This flaw can result in disclosure of uninitialized memory contents from prior operations, potentially exposing sensitive information from other clients or internal server state. While this issue primarily affects confidentiality, it may also impact availability if the invalid read leads to a crash.
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 | Will not fix | ||
| Red Hat Enterprise Linux 6 | xorg-x11-server | Will not fix | ||
| Red Hat Enterprise Linux 7 | tigervnc | Will not fix | ||
| Red Hat Enterprise Linux 7 | xorg-x11-server | Will not fix | ||
| Red Hat Enterprise Linux 8 | tigervnc | Will not fix | ||
| Red Hat Enterprise Linux 8 | xorg-x11-server | Will not fix | ||
| Red Hat Enterprise Linux 8 | xorg-x11-server-Xwayland | Will not fix | ||
| Red Hat Enterprise Linux 9 | tigervnc | Will not fix | ||
| Red Hat Enterprise Linux 9 | xorg-x11-server | Not affected | ||
| Red Hat Enterprise Linux 9 | xorg-x11-server-Xwayland | Affected |
Показывать по
Дополнительная информация
Статус:
EPSS
6.1 Medium
CVSS3
Связанные уязвимости
A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.
A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.
Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: data leak in xfixes extension's xfixessetclientdisconnectmode
A flaw was found in the XFIXES extension. The XFixesSetClientDisconnec ...
A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.
EPSS
6.1 Medium
CVSS3