Описание
A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
Отчет
This is an Important heap-based buffer overflow in libtiff affecting applications that explicitly configure the library to decode Pixarlog-compressed TIFF images using the PIXARLOGDATAFMT_8BITABGR output format with SamplesPerPixel == 3. Standard image reading functions, such as TIFFReadRGBAImage, are not directly impacted as they do not typically select this specific format. Exploitation requires processing a specially crafted TIFF image under these specific conditions.
Меры по смягчению последствий
To mitigate this issue, applications processing untrusted TIFF images should avoid explicitly configuring PIXARLOGDATAFMT_8BITABGR when decoding PixarLog-compressed TIFF images with three samples per pixel. This specific combination of output format and samples per pixel is required to trigger the heap-based buffer overflow.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | libtiff | Out of support scope | ||
| Red Hat Enterprise Linux 7 | compat-libtiff3 | Affected | ||
| Red Hat Enterprise Linux 7 | libtiff | Affected | ||
| Red Hat Enterprise Linux 8 | compat-libtiff3 | Affected | ||
| Red Hat Enterprise Linux 8 | libtiff | Affected | ||
| Red Hat Enterprise Linux 8 | mingw-libtiff | Affected | ||
| Red Hat Hardened Images | boost | Not affected | ||
| Red Hat Enterprise Linux 10 | libtiff | Fixed | RHSA-2026:41892 | 20.07.2026 |
| Red Hat Enterprise Linux 9 | libtiff | Fixed | RHSA-2026:42668 | 21.07.2026 |
| Red Hat Hardened Images | libtiff-main-4.7.1-2.4.hum1 | Fixed | RHSA-2026:34890 | 02.07.2026 |
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Дополнительная информация
Статус:
7.3 High
CVSS3
Связанные уязвимости
A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
Libtiff: libtiff: heap-based buffer overflow via crafted pixarlog-compressed tiff image
A flaw was found in libtiff. A remote attacker could exploit this vuln ...
7.3 High
CVSS3