Revisions of dnsmasq
Added another bug reference to the latest changes entry. * CVE-2023-49441, bsc#1226091: integer overflow via forward_query
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- bsc#1209358, CVE-2023-28450, dnsmasq-CVE-2023-28450.patch: default maximum EDNS.0 UDP packet size should be 1232
Added bug reference
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- bsc#1192529, dnsmasq-resolv-conf.patch: Fix a segfault when re-reading an empty resolv.conf - Remove "nogroup" membership from the dnsmasq user. - Use systemd-sysusers from 15.3 onwards
- jsc#SLE-17936: Sync this state from Factory to SLE-15-SP1. - SLE bugs that got fixed upstream between 2.79 and 2.86, but for which we need to keep references when syncing: * bsc#1176076: dnsmasq-servfail.patch * bsc#1156543: dnsmasq-siocgstamp.patch * bsc#1138743: dnsmasq-cache-size.patch * bsc#1076958: CVE-2017-15107, dnsmasq-CVE-2017-15107.patch * bsc#1180914: Open inotify socket only when used. * removed dnsmasq-dnspooq.patch - bsc#1173646: Set --local-service by default. - Update to 2.86: * Handle DHCPREBIND requests in the DHCPv6 server code. * Fix bug which caused dnsmasq to lose track of processes forked to handle TCP DNS connections under heavy load. * Major rewrite of the DNS server and domain handling code. This should be largely transparent, but it drastically improves performance and reduces memory foot-print when configuring large numbers of domains. * Revise resource handling for number of concurrent DNS queries. * Improve efficiency of DNSSEC. * Connection track mark based DNS query filtering. * Allow smaller than 64 prefix lengths in synth-domain, with caveats. --synth-domain=1234:4567::/56,example.com is now valid. * Make domains generated by --synth-domain appear in replies when in authoritative mode. * Ensure CAP_NET_ADMIN capability is available when conntrack is configured. * When --dhcp-hostsfile --dhcp-optsfile and --addn-hosts are
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- Update to 2.83: * bsc#1177077: Fixed DNSpooq vulnerabilities * Use the values of --min-port and --max-port in outgoing TCP connections to upstream DNS servers. * Fix a remote buffer overflow problem in the DNSSEC code. Any dnsmasq with DNSSEC compiled in and enabled is vulnerable to this, referenced by CVE-2020-25681, CVE-2020-25682, CVE-2020-25683 CVE-2020-25687. * Be sure to only accept UDP DNS query replies at the address from which the query was originated. This keeps as much entropy in the {query-ID, random-port} tuple as possible, to help defeat cache poisoning attacks. Refer: CVE-2020-25684. * Use the SHA-256 hash function to verify that DNS answers received are for the questions originally asked. This replaces the slightly insecure SHA-1 (when compiled with DNSSEC) or the very insecure CRC32 (otherwise). Refer: CVE-2020-25685 * Handle multiple identical near simultaneous DNS queries better. Previously, such queries would all be forwarded independently. This is, in theory, inefficent but in practise not a problem, _except_ that is means that an answer for any of the forwarded queries will be accepted and cached. An attacker can send a query multiple times, and for each repeat, another {port, ID} becomes capable of accepting the answer he is sending in the blind, to random IDs and ports. The chance of a succesful attack is therefore multiplied by the number of repeats of the query. The new behaviour detects repeated queries and merely stores the clients sending repeats so that when the first query completes, the answer can be sent to all the clients who asked. Refer: CVE-2020-25686.
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