Bug 1852373
Summary: | CVE-2020-14312 dnsmasq: insecure default configuration makes it an open resolver [fedora-all] | |||
---|---|---|---|---|
Product: | [Fedora] Fedora | Reporter: | Riccardo Schirone <rschiron> | |
Component: | dnsmasq | Assignee: | Petr Menšík <pemensik> | |
Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | |
Severity: | medium | Docs Contact: | ||
Priority: | medium | |||
Version: | 32 | CC: | aegorenk, code, dougsland, itamar, jima, laine, pemensik, thozza, veillard | |
Target Milestone: | --- | Keywords: | Reopened, Security, SecurityTracking | |
Target Release: | --- | |||
Hardware: | Unspecified | |||
OS: | Unspecified | |||
Whiteboard: | ||||
Fixed In Version: | dnsmasq-2.80-16.fc31 dnsmasq-2.81-4.fc32 dnsmasq-2.82-3.fc33 dnsmasq-2.81-5.fc32 | Doc Type: | No Doc Update | |
Doc Text: | Story Points: | --- | ||
Clone Of: | ||||
: | 2258062 (view as bug list) | Environment: | ||
Last Closed: | 2020-10-06 00:15:15 UTC | Type: | --- | |
Regression: | --- | Mount Type: | --- | |
Documentation: | --- | CRM: | ||
Verified Versions: | Category: | --- | ||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
Cloudforms Team: | --- | Target Upstream Version: | ||
Embargoed: | ||||
Bug Depends On: | ||||
Bug Blocks: | 1851342, 2258062 |
Description
Riccardo Schirone
2020-06-30 09:53:40 UTC
Use the following template to for the 'fedpkg update' request to submit an update for this issue as it contains the top-level parent bug(s) as well as this tracking bug. This will ensure that all associated bugs get updated when new packages are pushed to stable. ===== # bugfix, security, enhancement, newpackage (required) type=security # low, medium, high, urgent (required) severity=medium # testing, stable request=testing # Bug numbers: 1234,9876 bugs=1851342,1852373 # Description of your update notes=Security fix for [PUT CVEs HERE] # Enable request automation based on the stable/unstable karma thresholds autokarma=True stable_karma=3 unstable_karma=-3 # Automatically close bugs when this marked as stable close_bugs=True # Suggest that users restart after update suggest_reboot=False ====== Additionally, you may opt to use the bodhi web interface to submit updates: https://bodhi.fedoraproject.org/updates/new FEDORA-2020-eca8f3489f has been submitted as an update to Fedora 32. https://bodhi.fedoraproject.org/updates/FEDORA-2020-eca8f3489f FEDORA-2020-329859eff4 has been submitted as an update to Fedora 31. https://bodhi.fedoraproject.org/updates/FEDORA-2020-329859eff4 I have chosen to listen only on localhost, similar to default configuration on bind and unbound servers. When dnsmasq is just installed and started, it would not longer accept any queries from remote machines. Good variant is local-service, which would allow only machines connected to the same local network as the host. Otherwise interface=<netiface> option should be used, with lan interface specified. FEDORA-2020-329859eff4 has been pushed to the Fedora 31 testing repository. In short time you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-329859eff4` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-329859eff4 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2020-eca8f3489f has been pushed to the Fedora 32 testing repository. In short time you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-eca8f3489f` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-eca8f3489f See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2020-329859eff4 has been pushed to the Fedora 31 stable repository. If problem still persists, please make note of it in this bug report. FEDORA-2020-eca8f3489f has been pushed to the Fedora 32 stable repository. If problem still persists, please make note of it in this bug report. Resetting to make additional change. Current change accepts packets from every interface. It just drops them afterwards. This change would activate bind-interfaces, which would bind only localhost and not even receive packets from outside interfaces. It then does not have to drop queries from wrong addresses or interfaces, because socket would not even receive them. Also, users sending queries to default dnsmasq configuration would get immediate ICMP error port unreachable. It is also required to avoid conflict with systemd-resolved on the same host but different address. FEDORA-2020-54760174b6 has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2020-54760174b6 FEDORA-2020-756b92a093 has been submitted as an update to Fedora 32. https://bodhi.fedoraproject.org/updates/FEDORA-2020-756b92a093 FEDORA-2020-54760174b6 has been pushed to the Fedora 33 testing repository. In short time you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-54760174b6` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-54760174b6 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2020-756b92a093 has been pushed to the Fedora 32 testing repository. In short time you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-756b92a093` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-756b92a093 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2020-54760174b6 has been pushed to the Fedora 33 stable repository. If problem still persists, please make note of it in this bug report. FEDORA-2020-756b92a093 has been pushed to the Fedora 32 stable repository. If problem still persists, please make note of it in this bug report. |