Описание
nscd: Null pointer crashes after notfound response
If the Name Service Cache Daemon's (nscd) cache fails to add a not-found
netgroup response to the cache, the client request can result in a null
pointer dereference. This flaw was introduced in glibc 2.15 when the
cache was added to nscd.
This vulnerability is only present in the nscd binary.
A flaw was found in the glibc netgroup cache. After a failed cache insertion, addgetnetgrentX tries to send the non-existing response after the not-found header. This can lead to a null pointer dereference that causes a crash or exit.
Отчет
The flaw identified in the glibc netgroup cache constitutes a moderate severity issue due to its potential to trigger null pointer dereferences, leading to program crashes or exits. While null pointer dereferences can cause disruptions to system operations and possibly result in denial-of-service conditions, their impact is limited primarily to the affected process or application instance. However, the risk of exploitation may vary depending on the context of system usage. Systems that heavily rely on netgroup functionality may be more susceptible to exploitation, particularly if malicious actors can manipulate network traffic to trigger the vulnerability. This issue affects the nscd RPM package and not the glibc RPM package itself. Affected components are tracked by their RPM source package, in this case, the nscd binary package is built from the glibc source package, hence the affected component is glibc.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | glibc | Not affected | ||
| Red Hat Enterprise Linux 6 | compat-glibc | Not affected | ||
| Red Hat Enterprise Linux 6 | glibc | Out of support scope | ||
| Red Hat Enterprise Linux 7 | compat-glibc | Not affected | ||
| Red Hat Enterprise Linux 7 | glibc | Fixed | RHSA-2024:3588 | 04.06.2024 |
| Red Hat Enterprise Linux 8 | glibc | Fixed | RHSA-2024:3344 | 23.05.2024 |
| Red Hat Enterprise Linux 8 | glibc | Fixed | RHSA-2024:3344 | 23.05.2024 |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | glibc | Fixed | RHSA-2024:3464 | 29.05.2024 |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | glibc | Fixed | RHSA-2024:3309 | 23.05.2024 |
| Red Hat Enterprise Linux 8.4 Telecommunications Update Service | glibc | Fixed | RHSA-2024:3309 | 23.05.2024 |
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Дополнительная информация
Статус:
5.3 Medium
CVSS3
Связанные уязвимости
nscd: Null pointer crashes after notfound response If the Name Service Cache Daemon's (nscd) cache fails to add a not-found netgroup response to the cache, the client request can result in a null pointer dereference. This flaw was introduced in glibc 2.15 when the cache was added to nscd. This vulnerability is only present in the nscd binary.
nscd: Null pointer crashes after notfound response If the Name Service Cache Daemon's (nscd) cache fails to add a not-found netgroup response to the cache, the client request can result in a null pointer dereference. This flaw was introduced in glibc 2.15 when the cache was added to nscd. This vulnerability is only present in the nscd binary.
nscd: Null pointer crashes after notfound response If the Name Servic ...
nscd: Null pointer crashes after notfound response If the Name Service Cache Daemon's (nscd) cache fails to add a not-found netgroup response to the cache, the client request can result in a null pointer dereference. This flaw was introduced in glibc 2.15 when the cache was added to nscd. This vulnerability is only present in the nscd binary.
5.3 Medium
CVSS3