Описание
FreeRDP before 3.32.0 contains a heap buffer overflow vulnerability in persistent_cache_read_entry_v3 that allows local attackers to corrupt memory by supplying a crafted v3 persistent cache file. Attackers can set large width and height values that wrap the size calculation in persist_cache_get_data, causing fread to overflow an undersized buffer and potentially execute code.
A flaw was found in FreeRDP. This vulnerability allows a local attacker to execute arbitrary code or cause a denial of service (DoS) by supplying a specially crafted persistent cache file. When processing the malformed cache file, an arithmetic calculation error causes an undersized memory buffer to be allocated, leading to a heap-based buffer overflow during data read operations.
Отчет
An important-severity heap-based buffer overflow was found in FreeRDP's persistent bitmap cache handling. When FreeRDP loads a persistent cache file, an integer wraparound in the size calculation in persist_cache_get_data, triggered by large attacker-controlled width and height values in a crafted v3 persistent cache file, causes an undersized buffer to be allocated, which is then overflowed when the entry is read in persistent_cache_read_entry_v3. A local attacker who can place a crafted persistent cache file and have it loaded by a user could use this flaw to crash the FreeRDP client or potentially execute arbitrary code in the context of the client process. The freerdp component is affected as shipped in multiple Red Hat Enterprise Linux versions, in Red Hat In-Vehicle OS, and in the Fedora and EPEL community streams, where a fix is being pursued; the Red Hat Enterprise Linux 6 Extended Lifecycle Support stream is out of support scope. Red Hat rates this flaw as IMPORTANT with a CVSS 3.1 score of 7.3, consistent with the upstream severity assessment.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not 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 | freerdp | Out of support scope | ||
| Red Hat Enterprise Linux 7 | freerdp | Affected | ||
| Red Hat Enterprise Linux 8 | freerdp | Affected | ||
| Red Hat Enterprise Linux 9 | freerdp | Affected | ||
| Red Hat Enterprise Linux 10 | freerdp | Fixed | RHSA-2026:94514 | 03.11.2026 |
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Дополнительная информация
Статус:
EPSS
7.3 High
CVSS3
Связанные уязвимости
FreeRDP before 3.32.0 contains a heap buffer overflow vulnerability in persistent_cache_read_entry_v3 that allows local attackers to corrupt memory by supplying a crafted v3 persistent cache file. Attackers can set large width and height values that wrap the size calculation in persist_cache_get_data, causing fread to overflow an undersized buffer and potentially execute code.
FreeRDP before 3.32.0 contains a heap buffer overflow vulnerability in persistent_cache_read_entry_v3 that allows local attackers to corrupt memory by supplying a crafted v3 persistent cache file. Attackers can set large width and height values that wrap the size calculation in persist_cache_get_data, causing fread to overflow an undersized buffer and potentially execute code.
FreeRDP before 3.32.0 contains a heap buffer overflow vulnerability in ...
FreeRDP before 3.32.0 contains a heap buffer overflow vulnerability in persistent_cache_read_entry_v3 that allows local attackers to corrupt memory by supplying a crafted v3 persistent cache file. Attackers can set large width and height values that wrap the size calculation in persist_cache_get_data, causing fread to overflow an undersized buffer and potentially execute code.
ELSA-2026-94514: freerdp security, bug fix, and enhancement update (IMPORTANT)
EPSS
7.3 High
CVSS3