Erik Sjölund discovered several bugs in ncpfs that provides utilities to use resources from NetWare servers of which one also applies to the stable Debian distribution. Due to accessing a configuration file without further checks with root permissions it is possible to read arbitrary files.
For the stable distribution (woody) this problem has been fixed in version 2.2.0.18-10woody2.
For the unstable distribution (sid) this problem will be fixed soon.
We recommend that you upgrade your ncpfs package.
MD5 checksums of the listed files are available in the original advisory.