The vulnerability of the recv_files and read_ndx_and attrs functions in the rsync daemon allows a hacker to circumvent existing access restrictions and compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of rsync exists due to the lack of checks on the filenames fnamecmp in the daemonfilterlist data structure in the recvfiles function in receiver.c, and the absence of a sanitizepaths mechanism for paths found in the “xname follows” strings in the readndxand attrs function in...