Описание
avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast queries with source addresses that are not on-link, which allows remote attackers to cause a denial of service (traffic amplification) and may cause information leakage by obtaining potentially sensitive information from the responding device via port-5353 UDP packets. NOTE: this may overlap CVE-2015-2809.
Отчет
This vulnerability is rated as low severity because it allows a remote attacker to cause a denial of service or amplify traffic through crafted UDP packets, it could impact availability, it does not pose a significant risk to system integrity or confidentiality.
Меры по смягчению последствий
Ensure UDP port 5353 is blocked in the firewall. Moreover, configure correctly the rate limiting options based on your needs (see ratelimit-interval-usec and ratelimit-burst options in /etc/avahi/avahi-daemon.conf).
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | avahi | Will not fix | ||
| Red Hat Enterprise Linux 6 | avahi | Will not fix | ||
| Red Hat Enterprise Linux 8 | avahi | Will not fix | ||
| Red Hat Enterprise Linux 9 | avahi | Affected | ||
| Red Hat Enterprise Linux 7 | avahi | Fixed | RHSA-2020:1176 | 31.03.2020 |
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Дополнительная информация
Статус:
5.8 Medium
CVSS3
Связанные уязвимости
avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast queries with source addresses that are not on-link, which allows remote attackers to cause a denial of service (traffic amplification) and may cause information leakage by obtaining potentially sensitive information from the responding device via port-5353 UDP packets. NOTE: this may overlap CVE-2015-2809.
avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast queries with source addresses that are not on-link, which allows remote attackers to cause a denial of service (traffic amplification) and may cause information leakage by obtaining potentially sensitive information from the responding device via port-5353 UDP packets. NOTE: this may overlap CVE-2015-2809.
avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to ...
avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast queries with source addresses that are not on-link, which allows remote attackers to cause a denial of service (traffic amplification) and may cause information leakage by obtaining potentially sensitive information from the responding device via port-5353 UDP packets. NOTE: this may overlap CVE-2015-2809.
5.8 Medium
CVSS3