[FS#3586] dnsmasq, dnsmasq-full are vulnerable to remote code execution and other severe attacks.
openwrt-bugs at lists.openwrt.org
Thu Jan 21 08:03:34 EST 2021
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A new Flyspray task has been opened. Details are below.
User who did this - levush (levush)
Attached to Project - OpenWrt/LEDE Project
Summary - dnsmasq, dnsmasq-full are vulnerable to remote code execution and other severe attacks.
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To -
Operating System - All
Severity - Critical
Priority - Very Low
Reported Version - All
Due in Version - Undecided
Due Date - Undecided
Details - dnsmasq, dnsmasq-full, CVE-2020-25681, CVE-2020-25687, CVE-2020-25684, CVCVE-2020-25685, RCE
dnsmasq, dnsmasq-full are vulnerable to remote code execution and other severe attacks.
dnsmasq in openwrt is below 2.83,
e.g. 2.80 which renders nearly all openwrt-deployments vulnerable.
craft attacks documented below with openwrt router.
Update your dnsmasq software to the latest version (2.83 or above). This is the best and only complete mitigation.
-update dnsmasq and its flavors (-full, etc) asap to higher than 2.83 for all platforms of openwrt.
-notify the users by adding a big notice on the openwrt.org homepage, that they should
update their openwrt deployments.
Thanks in advance.
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