https://bugzilla.mindrot.org/show_bug.cgi?id=2702
Bug ID: 2702
Summary: ssh compiled with --with-ldns segfaults during
known_hosts parsing
Product: Portable OpenSSH
Version: 7.5p1
Hardware: amd64
OS: Linux
Status: NEW
Severity: normal
Priority: P5
Component: ssh
Assignee: [email protected]
Reporter: [email protected]
Created attachment 2968
--> https://bugzilla.mindrot.org/attachment.cgi?id=2968&action=edit
Backtrace of ssh 7.5p1 segfaulting
When OpenSSH-7.5p1 is compiled with "./configure --with-ldns", ssh
<somehost> segfaults if the host's key is already recorded in
known_hosts.
The current head of the master branch is affected too. Builds with
--without-ldns don't exhibit the problem, and neither does
OpenSSH-7.4p1 (according to git bisect, the commit 523db854 "prefer to
use ldns-config to find libldns" introduced the bug).
My ssh_config is empty, and I've tested this against a variety of
sshd's (including github.com). I'll attach a backtrace; if you need a
coredump or information about my build environment, please let me know.
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