Описание
The URL percent-encoding decode function in libcurl before 7.51.0 is called curl_easy_unescape. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get either just truncated or both truncated and turned negative. That could then lead to libcurl writing outside of its heap based buffer.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| .NET Core 1.0 on Red Hat Enterprise Linux | rh-dotnetcore10-curl | Out of support scope | ||
| .NET Core 1.1 on Red Hat Enterprise Linux | rh-dotnetcore11-curl | Out of support scope | ||
| .NET Core 2.0 on Red Hat Enterprise Linux | rh-dotnet20-curl | Out of support scope | ||
| .NET Core 2.1 on Red Hat Enterprise Linux | rh-dotnet21-curl | Will not fix | ||
| Red Hat Enterprise Linux 5 | curl | Not affected | ||
| Red Hat Enterprise Linux 6 | curl | Not affected | ||
| Red Hat Enterprise Linux 7 | curl | Will not fix | ||
| Red Hat Enterprise Virtualization 3 | mingw-virt-viewer | Will not fix | ||
| Red Hat JBoss Enterprise Web Server 3 | curl | Fix deferred | ||
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | httpd24-curl | Fixed | RHSA-2018:3558 | 13.11.2018 |
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Дополнительная информация
Статус:
EPSS
3.7 Low
CVSS3
2.6 Low
CVSS2
Связанные уязвимости
The URL percent-encoding decode function in libcurl before 7.51.0 is called `curl_easy_unescape`. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get either just truncated or both truncated and turned negative. That could then lead to libcurl writing outside of its heap based buffer.
The URL percent-encoding decode function in libcurl before 7.51.0 is called `curl_easy_unescape`. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get either just truncated or both truncated and turned negative. That could then lead to libcurl writing outside of its heap based buffer.
The URL percent-encoding decode function in libcurl before 7.51.0 is c ...
The URL percent-encoding decode function in libcurl before 7.51.0 is called `curl_easy_unescape`. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get either just truncated or both truncated and turned negative. That could then lead to libcurl writing outside of its heap based buffer.
EPSS
3.7 Low
CVSS3
2.6 Low
CVSS2