Описание
GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS resolver that can result in Private DNS queries leaked to local network's DNS servers, while on VPN. This vulnerability appears to have been fixed in Some Ubuntu 16.04 packages were fixed, but later updates removed the fix. cf. https://bugs.launchpad.net/ubuntu/+bug/1754671 an upstream fix does not appear to be available at this time.
An information exposure vulnerability has been found in NetworkManager when dnsmasq is used in DNS processing mode. An attacker in control of a DNS server could receive DNS queries even though a Virtual Private Network (VPN) was configured on the vulnerable machine.
Отчет
This issue did not affect the versions of NetworkManager as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include support for dnsmasq DNS resolver.
Меры по смягчению последствий
We suggest to keep the default dns=default in the NetworkManager configuration file to prevent DNS queries leaks to possibly hostile DNS servers.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | NetworkManager | Not affected | ||
| Red Hat Enterprise Linux 6 | NetworkManager | Not affected | ||
| Red Hat Enterprise Linux 8 | NetworkManager | Not affected | ||
| Red Hat Enterprise Linux 7 | NetworkManager | Fixed | RHBA-2018:3207 | 30.10.2018 |
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Дополнительная информация
Статус:
4.8 Medium
CVSS3
Связанные уязвимости
GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS resolver that can result in Private DNS queries leaked to local network's DNS servers, while on VPN. This vulnerability appears to have been fixed in Some Ubuntu 16.04 packages were fixed, but later updates removed the fix. cf. https://bugs.launchpad.net/ubuntu/+bug/1754671 an upstream fix does not appear to be available at this time.
GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS resolver that can result in Private DNS queries leaked to local network's DNS servers, while on VPN. This vulnerability appears to have been fixed in Some Ubuntu 16.04 packages were fixed, but later updates removed the fix. cf. https://bugs.launchpad.net/ubuntu/+bug/1754671 an upstream fix does not appear to be available at this time.
GNOME NetworkManager version 1.10.2 and earlier contains a Information ...
4.8 Medium
CVSS3