For NetBSD, upgrade to versions 3.1, 3.0, 2.1 and 2.0.x (2006-12-03) or higher, as they have been reported to fix this vulnerability. Note that this flaw was fixed in the 2006-12-03 releases without a change in version number. An upgrade is required as there are no known workarounds.
For Mac OS X, currently, there are no known workarounds or upgrades to correct this issue. However, Apple has released a patch to address this vulnerability.