Arch Linux Security Advisory ASA-202101-1 ========================================= Severity: High Date : 2021-01-04 CVE-ID : CVE-2020-14387 Package : rsync Type : man-in-the-middle Remote : Yes Link : https://security.archlinux.org/AVG-1374 Summary ======= The package rsync before version 3.2.3-2 is vulnerable to man-in-the- middle. Resolution ========== Upgrade to 3.2.3-2. # pacman -Syu "rsync>=3.2.3-2" The problem has been fixed upstream but no release is available yet. Workaround ========== None. Description =========== A flaw was found in rsync version 3.2.0pre1 to 3.2.4. rsync-ssl does not verify the hostname in the server certificate in openssl mode, so a remote, unauthenticated man-in-the-middle attacker with a valid certificate for another hostname could intercept connections. Impact ====== A remote, unauthenticated attacker in position of man-in-the-middle with a valid certificate for another hostname can intercept connections. References ========== https://bugs.archlinux.org/task/69051 https://bugzilla.redhat.com/show_bug.cgi?id=1875549 https://git.samba.org/?p=rsync.git;a=commitdiff;h=c3f7414c450faaf6a8281cc4a4... https://security.archlinux.org/CVE-2020-14387