Описание
A flaw was found in dnsmasq. A local attacker could exploit a null pointer dereference vulnerability in the parse_dhcp_opt function within the Config File Handler component by manipulating an argument. This could lead to a denial of service.
Отчет
This CVE has been marked as Rejected by the assigning CNA.
Меры по смягчению последствий
No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability. To reduce the risk, restrict write access to the dnsmasq.conf file and related configuration directories to trusted, privileged users only. Ensure that no untrusted process or user can modify DHCP or SIP-related options in the configuration. Deploy integrity monitoring or configuration management tools to detect unauthorized changes before restart.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | dnsmasq | Fix deferred | ||
| Red Hat Enterprise Linux 6 | dnsmasq | Fix deferred | ||
| Red Hat Enterprise Linux 7 | dnsmasq | Fix deferred | ||
| Red Hat Enterprise Linux 8 | dnsmasq | Fix deferred | ||
| Red Hat Enterprise Linux 9 | dnsmasq | Fix deferred | ||
| Red Hat OpenShift Container Platform 4 | openshift/ose-rhel-coreos-9 | Fix deferred |
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Дополнительная информация
Статус:
5.5 Medium
CVSS3
Связанные уязвимости
Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: Based on the analysis by MITRE and review of community feedback, the reported conditions represent expected and intentional behavior within dnsmasq's documented design, rather than security vulnerabilities.
Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: Based on the analysis by MITRE and review of community feedback, the reported conditions represent expected and intentional behavior within dnsmasq's documented design, rather than security vulnerabilities.
A vulnerability was determined in dnsmasq up to 2.73rc6. Affected by this issue is the function parse_dhcp_opt of the file src/option.c of the component Config File Handler. This manipulation of the argument m causes null pointer dereference. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
5.5 Medium
CVSS3