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    ArchLinux: 202101-24: atftp: denial of service

    Date 15 Jan 2021
    354
    Posted By LinuxSecurity Advisories
    The package atftp before version 0.7.2-3 is vulnerable to denial of service.
    Arch Linux Security Advisory ASA-202101-24
    ==========================================
    
    Severity: Medium
    Date    : 2021-01-12
    CVE-ID  : CVE-2020-6097
    Package : atftp
    Type    : denial of service
    Remote  : Yes
    Link    : https://security.archlinux.org/AVG-1395
    
    Summary
    =======
    
    The package atftp before version 0.7.2-3 is vulnerable to denial of
    service.
    
    Resolution
    ==========
    
    Upgrade to 0.7.2-3.
    
    # pacman -Syu "atftp>=0.7.2-3"
    
    The problem has been fixed upstream but no release is available yet.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    An exploitable denial of service vulnerability exists in the atftpd
    daemon functionality of atftp 0.7.2. A specially crafted sequence of
    RRQ-Multicast requests trigger an assert() call resulting in denial-of-
    service. An attacker can send a sequence of malicious packets to
    trigger this vulnerability.
    
    Impact
    ======
    
    A malicious remote user might crash the application by performing a
    sequence of crafted queries.
    
    References
    ==========
    
    https://bugs.archlinux.org/task/69175
    https://talosintelligence.com/vulnerability_reports/TALOS-2020-1029
    https://sourceforge.net/u/peterkaestle/atftp/ci/96409ef3b9ca061f9527cfaafa778105cf15d994/
    https://security.archlinux.org/CVE-2020-6097
    

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