A directory traversal vulnerability was discovered in mailreader whereby remote attackers could view arbitrary files with the privileges of the nph-mr.cgi process (by default, www-data) via relative paths and a null byte in the configLanguage parameter.
For the current stable distribution (woody), this problem has been fixed in version 2.3.29-5woody1.
For the unstable distribution (sid), this problem will be fixed soon.
We recommend that you update your mailreader package.
MD5 checksums of the listed files are available in the original advisory.