Описание
rsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of a heap allocation by supplying a crafted files-from entry. Attackers can trigger the vulnerability against a read-only rsync daemon module by providing a files-from entry containing both an interior and trailing backslash, causing the add_implied_include() function to under-count the trailing backslash when sizing the destination buffer.
A flaw was found in rsync. Remote unauthenticated attackers can exploit a heap out-of-bounds write vulnerability by supplying a crafted files-from entry. This entry, containing both an interior and trailing backslash, causes the add_implied_include() function to under-count the trailing backslash when sizing the destination buffer. This can lead to information disclosure or denial of service.
Отчет
This is an Important vulnerability in rsync that allows remote unauthenticated attackers to achieve information disclosure and denial of service. The flaw occurs in the rsync daemon when processing a specially crafted files-from entry, leading to a heap out-of-bounds write. This can be exploited against read-only rsync daemon modules, making it a significant risk for publicly exposed rsync services.
Меры по смягчению последствий
Restrict access to the rsync daemon (TCP 873) to trusted hosts with firewall rules. If the daemon is unused, disable and stop rsyncd.service.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | rsync | Not affected | ||
| Red Hat Enterprise Linux 7 | rsync | Affected | ||
| Red Hat OpenShift Container Platform 4 | openshift/ose-rhel-coreos-8 | Affected | ||
| Red Hat OpenShift Container Platform 5 | openshift/ose-rhel-coreos-9 | Affected | ||
| Red Hat Enterprise Linux 10 | rsync | Fixed | RHSA-2026:67463 | 14.09.2026 |
| Red Hat Enterprise Linux 8 | rsync | Fixed | RHSA-2026:74095 | 30.09.2026 |
| Red Hat Enterprise Linux 9 | rsync | Fixed | RHSA-2026:67462 | 14.09.2026 |
| Red Hat Enterprise Linux 9 | rsync | Fixed | RHSA-2026:67462 | 14.09.2026 |
| Red Hat OpenShift Container Platform 4.22 | openshift/ose-rhel-coreos | Fixed | RHSA-2026:71446 | 29.09.2026 |
| Red Hat Cost Management On-Premise 1 | costmanagement/costmanagement-ui-rhel10 | Fixed | RHSA-2026:79357 | 08.10.2026 |
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Дополнительная информация
Статус:
EPSS
8.2 High
CVSS3
Связанные уязвимости
rsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of a heap allocation by supplying a crafted files-from entry. Attackers can trigger the vulnerability against a read-only rsync daemon module by providing a files-from entry containing both an interior and trailing backslash, causing the add_implied_include() function to under-count the trailing backslash when sizing the destination buffer.
rsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of a heap allocation by supplying a crafted files-from entry. Attackers can trigger the vulnerability against a read-only rsync daemon module by providing a files-from entry containing both an interior and trailing backslash, causing the add_implied_include() function to under-count the trailing backslash when sizing the destination buffer.
rsync 3.2.5 < 3.5.0 Heap Out-of-Bounds Write via files-from Entry
rsync 3.2.5 before 3.5.0contains a heap out-of-bounds write vulnerabil ...
Уязвимость функции add_implied_include() сетевого демона rsync --daemon утилиты для передачи и синхронизации файлов Rsync, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
8.2 High
CVSS3