The best approach, when having identified an issue for a specific release version, is to state the release version in the 'affected version' field.
If you (or another contributor) then investigate further and find the issue also present in another release version, adjust the 'affected version' field.
That way people can do fine grained searches to find what they look for.
Then, when having created, tested and uploaded the patch for your version, state that version in the 'fix version' field. And if you have the time and pleasure to test the patch for the other affected version and the tests pass you update the 'fix version' field. If it becomes clear that a specific release version needs a special patch, you then have the options to either include that special patch in the issue and describe in the upload comment what the affected release version it is applicable to, or create a new issue.
The more information provided in a JIRA issue the better it helps other users, contributors and especially committers, as the burden to commit is on them. If the information is incomplete or cryptic the issue will take longer to be resolved.
In this case (this issue), the issue applies to trunk first. And given that the differences between trunk and 13.07 with respect to the affected areas is negligible, it can be used as a fix for 13.07 as well.