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.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[Nano-devel] 20100407 New prerelease for security tweaks
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