Downgrade CAP_NET_ADMIN to CAP_NET_RAW in unbound.service #82
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Since kernel 3.2, CAP_NET_RAW instead of CAP_NET_ADMIN is sufficient to allow for the usage of the IP_TRANSPARENT socket option. CAP_NET_ADMIN allows far more mayhem then CAP_NET_RAW, so prefer the safer, more restrictive solution.
wcawijngaards
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Sep 20, 2019
- Merge #82 from hardfalcon: Downgrade CAP_NET_ADMIN to CAP_NET_RAW in unbound.service.
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Thanks for the fixup, less permissions are better. Merged it. |
jedisct1
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Sep 21, 2019
* nlnet/master: (22 commits) Changelog entry for NLnetLabs#83 - Merge NLnetLabs#83 from Maryse47: contrib/unbound.service.in: do not fork into the background. unbound.service.in: do not fork into the background Changelog entry for NLnetLabs#81. - Merge NLnetLabs#81 from Maryse47: Consistently use /dev/urandom instead of /dev/random in scripts and docs. (Changelog entry for NLnetLabs#82). - Merge NLnetLabs#82 from hardfalcon: Downgrade CAP_NET_ADMIN to CAP_NET_RAW in unbound.service. Downgrade CAP_NET_ADMIN to CAP_NET_RAW in unbound.service Consistently use /dev/urandom instead of /dev/random in scripts and docs - Merge NLnetLabs#80 from stasic: Improve wording in man page. (Changelog entry for merge) Improve wording in man page - Fix wrong response ttl for prepended short CNAME ttls, this would create a wrong zero_ttl response count with serve-expired enabled. - Fix for oss-fuzz build warning. - Fix fix for NLnetLabs#78 to also free service callback struct. - oss-fuzz badge on README.md. - Merge pull request NLnetLabs#76 from Maryse47: Improvements and fixes for systemd unbound.service. (Changelog note for merge of NLnetLabs#76). - Fix NLnetLabs#78: Memory leak in outside_network.c. Improvements and fixes for systemd unbound.service - Use explicit bzero for wiping clear buffer of hash in cachedb, reported by Eric Sesterhenn from X41 D-Sec. - Fix NLnetLabs#72: configure --with-syslog-facility=LOCAL0-7 with default LOG_DAEMON (as before) can set the syslog facility that the server uses to log messages. - Fix NLnetLabs#71: fix openssl error squelch commit compilation error. - squelch DNS over TLS errors 'ssl handshake failed crypto error' on low verbosity, they show on verbosity 3 (query details), because there is a high volume and the operator cannot do anything for the remote failure. Specifically filters the high volume errors. - updated Makefile dependencies. ...
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Since kernel 3.2, just using CAP_NET_RAW instead of CAP_NET_ADMIN is sufficient to allow for the usage of the IP_TRANSPARENT socket option. CAP_NET_ADMIN allows far more mayhem then CAP_NET_RAW, so prefer the safer, more restrictive solution.