** Merge proposal linked: https://code.launchpad.net/~sergiodj/ubuntu/+source/openssh/+git/openssh/+merge/418102
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to openssh in Ubuntu. https://bugs.launchpad.net/bugs/1903516 Title: aborted (core dumped) when using ConnectTimeout > 2147483 Status in portable OpenSSH: Unknown Status in openssh package in Ubuntu: Fix Released Status in openssh source package in Bionic: Triaged Status in openssh source package in Focal: Triaged Status in openssh source package in Impish: Triaged Status in openssh source package in Jammy: Fix Released Bug description: [Impact] Setting ConnectTimeout to a value higher than INT_MAX/1000 causes the ssh client to crash. This happens due to an integer overflow which was fixed upstream with the patch being proposed for this SRU, which caps the effective value for that option at INT_MAX/1000. While use cases triggering the bug may be uncommon, the patch is straightforward and the fix could be staged for the next time an upload is needed. [Test Plan] Running ssh -o "ConnectTimeout=$(perl -e 'use POSIX; my $max = int(POSIX::INT_MAX/1000)+1; print "$max\n";')" localhost triggers the error. In this case, the ssh client will crash and Aborted will be printed to stderr. By applying the proposed fix, running the same command should allow the ssh connection to proceed to the authentication steps. [Where problems could occur] Most problems would manifest due to rebuilding the package (e.g., dependency changes). Since this proposal is to stage these SRUs, such risk is being deferred to be shared with the next, more critical, upload. [Other Info] All the SRUs proposed here should be staged due to the low priority nature of the bug. [Original bug report] The ssh client fails with the message "Aborted (core dumped)" when setting the ConnectTimeout to 2147484 or higher. lsb_release: Linux Mint 20 (but also tested this on latest ubuntu:20.04 docker container) openssh-client version: 1:8.2p1-4ubuntu0.1 I expected that either the connect timeout would be used correctly, or that it would fail with a proper error message saying the connect timeout can't be higher than 2147483. What happened: $ ssh -o "ConnectTimeout=2147484" localhost Aborted (core dumped) To manage notifications about this bug go to: https://bugs.launchpad.net/openssh/+bug/1903516/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
