Описание
A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the nss_gethostbyname2_r and nss_getcanonname_r hooks without implementing the nss*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.
Отчет
This issue is only exploitable with very specific conditions, as detailed in the description. However, all glibc versions shipped in Red Hat Enterprise Linux are vulnerable to this issue.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | compat-glibc | Out of support scope | ||
| Red Hat Enterprise Linux 6 | glibc | Out of support scope | ||
| Red Hat Enterprise Linux 7 | compat-glibc | Will not fix | ||
| Red Hat Enterprise Linux 7 | glibc | Will not fix | ||
| Red Hat Enterprise Linux 8 | glibc | Fixed | RHSA-2023:5455 | 05.10.2023 |
| Red Hat Enterprise Linux 8 | glibc | Fixed | RHSA-2023:5455 | 05.10.2023 |
| Red Hat Enterprise Linux 8.6 Extended Update Support | glibc | Fixed | RHSA-2023:7409 | 21.11.2023 |
| Red Hat Enterprise Linux 9 | glibc | Fixed | RHBA-2024:2413 | 30.04.2024 |
| Red Hat Enterprise Linux 9 | glibc | Fixed | RHSA-2023:5453 | 05.10.2023 |
| Red Hat Enterprise Linux 9 | glibc | Fixed | RHBA-2024:2413 | 30.04.2024 |
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Дополнительная информация
Статус:
5.9 Medium
CVSS3
Связанные уязвимости
A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.
A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.
A flaw was found in glibc. In an extremely rare situation, the getaddr ...
A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.
Уязвимость функции getaddrinfo библиотеки GNU C (glibc), позволяющая нарушителю вызвать отказ в обслуживании
5.9 Medium
CVSS3