GNU nano before 2.2.4 does not verify whether a file has been changed
before it is overwritten in a file-save operation, which allows local
user-assisted attackers to overwrite arbitrary files via a symlink
attack on an attacker-owned file that is being edited by the victim. (CVE-2010-1160)
Race condition in GNU nano before 2.2.4, when run by root to edit a file
that is not owned by root, allows local user-assisted attackers to
change the ownership of arbitrary files via vectors related to the
creation of backup files. (CVE-2010-1161)
