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    ArchLinux: 202101-1: rsync: man-in-the-middle

    Date 04 Jan 2021
    573
    Posted By LinuxSecurity Advisories
    The package rsync before version 3.2.3-2 is vulnerable to man-in-the- middle.
    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=c3f7414c450faaf6a8281cc4a4403529aeb7d859
    https://security.archlinux.org/CVE-2020-14387
    
    

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