Описание
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality.
Отчет
This flaw affects the versions of SLiRP embedded in qemu-kvm as shipped with Red Hat Enterprise Linux 8 and RHEL Advanced Virtualization. A future update may address this issue. It is worth noting that although qemu-kvm is built with SLiRP networking support, due to its limitations, it is not used by the virtual machine guests by default.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | qemu-kvm | Out of support scope | ||
| Red Hat Enterprise Linux 7 | qemu-kvm | Out of support scope | ||
| Red Hat Enterprise Linux 7 | qemu-kvm-ma | Out of support scope | ||
| Red Hat Enterprise Linux 7 | qemu-kvm-rhev | Out of support scope | ||
| Red Hat Enterprise Linux 8 | container-tools:3.0/libslirp | Fix deferred | ||
| Red Hat Enterprise Linux 8 | container-tools:rhel8/libslirp | Fix deferred | ||
| Red Hat Enterprise Linux 8 Advanced Virtualization | virt:8.2/qemu-kvm | Fix deferred | ||
| Red Hat Enterprise Linux 8 Advanced Virtualization | virt:8.3/qemu-kvm | Fix deferred | ||
| Red Hat Enterprise Linux 8 Advanced Virtualization | virt:av/qemu-kvm | Affected | ||
| Red Hat Enterprise Linux 9 | libslirp | Not affected |
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Дополнительная информация
Статус:
3.8 Low
CVSS3
Связанные уязвимости
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
An invalid pointer initialization issue was found in the SLiRP network ...
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
Уязвимость функции bootp_input() компонента src/bootp.c эмулятора TCP-IP Libslirp, позволяющая нарушителю получить доступ к конфиденциальным данным
3.8 Low
CVSS3