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    ArchLinux: 202009-1: opendmarc: denial of service

    Date 09 Sep 2020
    162
    Posted By LinuxSecurity Advisories
    The package opendmarc before version 1.3.3-1 is vulnerable to denial of service.
    Arch Linux Security Advisory ASA-202009-1
    =========================================
    
    Severity: Medium
    Date    : 2020-09-01
    CVE-ID  : CVE-2020-12460
    Package : opendmarc
    Type    : denial of service
    Remote  : Yes
    Link    : https://security.archlinux.org/AVG-1208
    
    Summary
    =======
    
    The package opendmarc before version 1.3.3-1 is vulnerable to denial of
    service.
    
    Resolution
    ==========
    
    Upgrade to 1.3.3-1.
    
    # pacman -Syu "opendmarc>=1.3.3-1"
    
    The problem has been fixed upstream in version 1.3.3.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 has improper null
    termination in the function opendmarc_xml_parse that can result in a
    one-byte heap overflow in opendmarc_xml when parsing a specially
    crafted DMARC aggregate report. This can cause remote memory corruption
    when a '\0' byte overwrites the heap metadata of the next chunk and its
    PREV_INUSE flag.
    
    Impact
    ======
    
    A remote attacker might be able to cause a denial of service or
    possibly execute arbitrary code.
    
    References
    ==========
    
    https://github.com/trusteddomainproject/OpenDMARC/issues/64
    https://security.archlinux.org/CVE-2020-12460
    

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