Описание
FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.
A flaw was found in FFmpeg. A heap buffer overflow in the RIST protocol reader allows a remote attacker to trigger memory corruption by sending an oversized packet to an FFmpeg instance receiving a RIST stream. The librist_read() function ignores its buffer size argument, copying the full payload into the caller-provided buffer without bounds checking. This could lead to denial of service or arbitrary code execution.
Отчет
The ffmpeg package is not shipped in base Red Hat Enterprise Linux. It is available through EPEL and Fedora with librist support enabled. Red Hat Enterprise Linux AI ships a reduced FFmpeg build that explicitly excludes librist, making the RIST code path unreachable. Red Hat OpenShift AI container images do not directly install FFmpeg. Exploitation requires the victim to be actively receiving a RIST stream, which is a niche broadcast video protocol not used in typical RH product deployments.
Меры по смягчению последствий
No mitigation is currently available for this flaw.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux AI (RHEL AI) 3 | ffmpeg | Not affected | ||
| Red Hat OpenShift AI (RHOAI) | rhoai/odh-vllm-gaudi-rhel9 | Not affected |
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Дополнительная информация
Статус:
8.8 High
CVSS3
Связанные уязвимости
FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.
FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.
FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RI ...
FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.
8.8 High
CVSS3