Описание
An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.
Отчет
Red Hat has set this as Moderate severity issue, because this CVE only affects servers where Spotlight is explicitly enabled globally or on individual shares with "spotlight = yes". However, the default spotlight configuration is set as no - Check https://www.samba.org/samba/docs/current/man-html/smb.conf.5.html#spotlight.
Меры по смягчению последствий
As a possible workaround, disable Spotlight by removing all configuration stanzas ("spotlight=yes|true") that enable Spotlight .
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | samba | Out of support scope | ||
| Red Hat Enterprise Linux 6 | samba4 | Out of support scope | ||
| Red Hat Enterprise Linux 7 | samba | Out of support scope | ||
| Red Hat Storage 3 | samba | Affected | ||
| Red Hat Enterprise Linux 8 | samba | Fixed | RHSA-2023:7139 | 14.11.2023 |
| Red Hat Enterprise Linux 8 | samba | Fixed | RHSA-2023:7139 | 14.11.2023 |
| Red Hat Enterprise Linux 8.6 Extended Update Support | samba | Fixed | RHSA-2024:0423 | 25.01.2024 |
| Red Hat Enterprise Linux 8.8 Extended Update Support | samba | Fixed | RHSA-2024:0580 | 30.01.2024 |
| Red Hat Enterprise Linux 9 | samba | Fixed | RHSA-2023:6667 | 07.11.2023 |
| Red Hat Enterprise Linux 9 | samba | Fixed | RHSA-2023:6667 | 07.11.2023 |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.
An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.
An infinite loop vulnerability was found in Samba's mdssvc RPC service ...
An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.
Уязвимость функции sl_unpack_loop() службы mdssvc RPC пакета программ сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
7.5 High
CVSS3