Описание
A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'post' size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.
Ghostscript's rsearch procedure was vulnerable to an integer underflow, leading to a miscalculation of the size of a buffer, which then can be used to access arbitrary memory. As a result, a specially crafted postscript file could use this flaw to disable the sandbox, which allows arbitrary reads and writes on the file system and execute commands.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | ghostscript | Not affected | ||
| Red Hat Enterprise Linux 6 | ghostscript | Not affected | ||
| Red Hat Enterprise Linux 7 | ghostscript | Not affected | ||
| Red Hat Enterprise Linux 8 | ghostscript | Not affected |
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Дополнительная информация
Статус:
EPSS
7.3 High
CVSS3
Связанные уязвимости
A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'post' size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.
A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'post' size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.
A memory corruption issue was found in Artifex Ghostscript 9.50 and 9. ...
EPSS
7.3 High
CVSS3