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CVE-2021-3738

Опубликовано: 09 нояб. 2021
Источник: redhat
CVSS3: 7.6
EPSS Низкий

Описание

In DCE/RPC it is possible to share the handles (cookies for resource state) between multiple connections via a mechanism called 'association groups'. These handles can reference connections to our sam.ldb database. However while the database was correctly shared, the user credentials state was only pointed at, and when one connection within that association group ended, the database would be left pointing at an invalid 'struct session_info'. The most likely outcome here is a crash, but it is possible that the use-after-free could instead allow different user state to be pointed at and this might allow more privileged access.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 6sambaNot affected
Red Hat Enterprise Linux 6samba4Not affected
Red Hat Enterprise Linux 7sambaNot affected
Red Hat Enterprise Linux 8sambaNot affected
Red Hat Enterprise Linux 9sambaNot affected
Red Hat Storage 3sambaNot affected

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-416
https://bugzilla.redhat.com/show_bug.cgi?id=2021726samba: Use after free in Samba AD DC RPC server

EPSS

Процентиль: 60%
0.00402
Низкий

7.6 High

CVSS3

Связанные уязвимости

CVSS3: 8.8
ubuntu
почти 4 года назад

In DCE/RPC it is possible to share the handles (cookies for resource state) between multiple connections via a mechanism called 'association groups'. These handles can reference connections to our sam.ldb database. However while the database was correctly shared, the user credentials state was only pointed at, and when one connection within that association group ended, the database would be left pointing at an invalid 'struct session_info'. The most likely outcome here is a crash, but it is possible that the use-after-free could instead allow different user state to be pointed at and this might allow more privileged access.

CVSS3: 8.8
nvd
почти 4 года назад

In DCE/RPC it is possible to share the handles (cookies for resource state) between multiple connections via a mechanism called 'association groups'. These handles can reference connections to our sam.ldb database. However while the database was correctly shared, the user credentials state was only pointed at, and when one connection within that association group ended, the database would be left pointing at an invalid 'struct session_info'. The most likely outcome here is a crash, but it is possible that the use-after-free could instead allow different user state to be pointed at and this might allow more privileged access.

CVSS3: 8.8
msrc
больше 1 года назад

Описание отсутствует

CVSS3: 8.8
debian
почти 4 года назад

In DCE/RPC it is possible to share the handles (cookies for resource s ...

CVSS3: 8.8
github
почти 4 года назад

In DCE/RPC it is possible to share the handles (cookies for resource state) between multiple connections via a mechanism called 'association groups'. These handles can reference connections to our sam.ldb database. However while the database was correctly shared, the user credentials state was only pointed at, and when one connection within that association group ended, the database would be left pointing at an invalid 'struct session_info'. The most likely outcome here is a crash, but it is possible that the use-after-free could instead allow different user state to be pointed at and this might allow more privileged access.

EPSS

Процентиль: 60%
0.00402
Низкий

7.6 High

CVSS3