The parse_arguments function in options.c in rsyncd in rsync before 3.1.3 does not prevent multiple --protect-args uses, which allows remote attackers to bypass an argument-sanitization protection mechanism.
https://git.samba.org/rsync.git/?p=rsync.git;a=commit;h=7706303828fcde524222babb2833864a4bd09e07
https://download.samba.org/pub/rsync/src-previews/rsync-3.1.3pre1-NEWS
http://www.securityfocus.com/bid/102803
http://www.securitytracker.com/id/1040276
https://lists.debian.org/debian-lts-announce/2018/01/msg00021.html
https://usn.ubuntu.com/3543-1/
https://security.gentoo.org/glsa/201805-04
https://lists.debian.org/debian-lts-announce/2019/03/msg00027.html
https://lists.debian.org/debian-lts-announce/2021/11/msg00028.html
Source: MITRE
Published: 2018-01-17
Updated: 2021-12-16
Type: NVD-CWE-noinfo
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH