Описание
In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.
Отчет
Although this flaw affects versions of freerdp shipped with Red Hat Enterprise Linux 7 and 8, Red Hat Product Security views this flaw as having low impact because it only affects the freerdp client, the user must connect to an untrusted or compromised server, and it would not lead to a persistent denial of service if exploited.
Меры по смягчению последствий
This flaw can be mitigated by deactivating video redirection on the client side and not using /video.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | freerdp | Out of support scope | ||
| Red Hat Enterprise Linux 7 | freerdp | Fixed | RHSA-2020:4031 | 29.09.2020 |
| Red Hat Enterprise Linux 8 | freerdp | Fixed | RHSA-2020:4647 | 04.11.2020 |
| Red Hat Enterprise Linux 8 | vinagre | Fixed | RHSA-2020:4647 | 04.11.2020 |
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Дополнительная информация
Статус:
EPSS
5.4 Medium
CVSS3
Связанные уязвимости
In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.
In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.
In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer ...
Уязвимость реализации протокола удалённого рабочего стола FreeRDP, вызванная целочисленным переполнением, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации
Moderate: freerdp and vinagre security, bug fix, and enhancement update
EPSS
5.4 Medium
CVSS3