Описание
There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.
The Mozilla Foundation Security Advisory describes this flaw as:
A double-free in libwebp could have led to memory corruption and a potentially exploitable crash.
Отчет
Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | firefox | Out of support scope | ||
| Red Hat Enterprise Linux 6 | thunderbird | Out of support scope | ||
| Red Hat Enterprise Linux 7 | firefox | Fixed | RHSA-2023:1791 | 14.04.2023 |
| Red Hat Enterprise Linux 7 | thunderbird | Fixed | RHSA-2023:1806 | 17.04.2023 |
| Red Hat Enterprise Linux 7 | libwebp | Fixed | RHSA-2023:2077 | 02.05.2023 |
| Red Hat Enterprise Linux 8 | firefox | Fixed | RHSA-2023:1787 | 14.04.2023 |
| Red Hat Enterprise Linux 8 | thunderbird | Fixed | RHSA-2023:1802 | 17.04.2023 |
| Red Hat Enterprise Linux 8 | libwebp | Fixed | RHSA-2023:2076 | 02.05.2023 |
| Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions | firefox | Fixed | RHSA-2023:1792 | 14.04.2023 |
| Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions | thunderbird | Fixed | RHSA-2023:1803 | 17.04.2023 |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.
There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.
There exists a use after free/double free in libwebp. An attacker can ...
EPSS
7.5 High
CVSS3