Changes reviewed and SRU Template ready, uploaded for the SRU Team to accept it into Bionic.
** Description changed: + [Impact] + + * This worked in former relases, so from a LTS->LTS upgraders POV it is + an upgrade regression + * The impact is that local source (-s) can no more be used as before + * The fix is backporting the fix that we made in Debian (but without all + the noise of the arg parsing rewrite for SRU simplicity) + + [Test Case] + + * Run with local source port, like your local SSH for example: + $ netcat -s 127.0.0.1 127.0.0.1 22 < /dev/null + + [Regression Potential] + + * the Minimized change (compared to the big change that versions going + forward got) should be safe as it just allows a case that was formerly + forbidden in arg-parsing. Never the less there could be a regression if + one of those combinations causes an issue when ran where it formerly + just was denied on arg parse. Think a script that since Bionic fails + (due to this bug) but once enabled will "work" and DUE TO THAT might + then trigger actions that are an issue. + Never the less, since currently in Bionic this just fails, I'd assume + the this is a rather theoretical risk - and being a regression to + former releases we should fix it to make LTS->LTS upgraders suffer + less. + + [Other Info] + + * n/a + + Hey, netcat shows a usage error if i try to use the "-s" option: Example in Bionic: $ netcat -s 127.0.0.1 127.0.0.1 22 < /dev/null usage: nc [-46CDdFhklNnrStUuvZz] [-I length] [-i interval] [-M ttl] [-m minttl] [-O length] [-P proxy_username] [-p source_port] [-q seconds] [-s source] [-T keyword] [-V rtable] [-W recvlimit] [-w timeout] [-X proxy_protocol] [-x proxy_address[:port]] [destination] [port] Example in Xenial: netcat -s 127.0.0.1 127.0.0.1 22 < /dev/null SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.4 Manpage shows that the option is still availible and should work. Both systems use openbsd netcat. $ type netcat netcat is hashed (/bin/netcat) $ ls -lah /bin/netcat lrwxrwxrwx 1 root root 24 Apr 25 21:56 /bin/netcat -> /etc/alternatives/netcat $ ls -lah /etc/alternatives/netcat lrwxrwxrwx 1 root root 15 Apr 25 21:56 /etc/alternatives/netcat -> /bin/nc.openbsd ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: netcat-openbsd 1.187-1 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 Date: Fri Apr 27 13:41:20 2018 Dependencies: gcc-8-base 8-20180414-1ubuntu2 libbsd0 0.8.7-1 libc6 2.27-3ubuntu1 libgcc1 1:8-20180414-1ubuntu2 ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: netcat-openbsd UpgradeStatus: No upgrade log present (probably fresh install) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767283 Title: nc doesn't support "-s IP" option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/netcat-openbsd/+bug/1767283/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
