ResolutionAccording to the cve-2011-0414 “ISC was not able to reproduce this defect in 9.7.2 using -n1, which causes named to use only one worker thread, thus avoiding the deadlock.”
It means the vulnerability is actual for BIND server that is ran in multi-thread mode.
Versions 9.7.1-9.7.2-P3 are affected.
These BIND versions are shipped with Parallels Plesk Panel 9.5.x-10.x for Windows.
However, Parallels Plesk Panel for Windows runs BIND with option “-n1”, i.e. Parallels Plesk Panel on Windows is not affected with the vulnerability if BIND is installed with Parallels Plesk Panel.
If you installed BIND manually, you have to update BIND up to version 9.7.3 or run one with option -n1.
Parallels Plesk Panel for Linux utilizes native OS package of the BIND, i.e. it could be affected if OS package of BIND is 9.7.1-9.7.2-P3. In this case you have to apply workaround with option -n1 enabled.