Bugzilla – Bug 1238
segmentation fault when adding through the remote interface a per-view local zone to a view with no previous (configured) local zones
Last modified: 2017-03-22 08:20:22 CET
Created attachment 387 [details]
Infoblox fix for the problem
Here are the high-level defect reproduction steps:
- define an empty view in configuration, e.g.
(note there are no local zones defined for this view)
- start unbound configured for remote control
- add one local zone to this view via remote command:
$ unbound-control view_local_zone view3 abc.com always_nxdomain
- observe the crash
In our environment this problem was fixed with the attached patch. This patch does introduce a potential for some heap waste, however this is not expected to become a serious issue.
Note also that the potential for similar bug exists with the per-view respip configuration as well. Currently this is not an issue (at least not in our environment), as the remote command for defining the per-view respip directives is not yet implemented.
Fixed this, by creating the local zones when needed in remote.c. This does not waste memory for them. Thanks for the report!
Best regards, Wouter