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    ArchLinux: 202012-19: gdk-pixbuf2: denial of service

    Date 17 Dec 2020
    244
    Posted By LinuxSecurity Advisories
    The package gdk-pixbuf2 before version 2.42.2-1 is vulnerable to denial of service.
    Arch Linux Security Advisory ASA-202012-19
    ==========================================
    
    Severity: Medium
    Date    : 2020-12-09
    CVE-ID  : CVE-2020-29385
    Package : gdk-pixbuf2
    Type    : denial of service
    Remote  : No
    Link    : https://security.archlinux.org/AVG-1328
    
    Summary
    =======
    
    The package gdk-pixbuf2 before version 2.42.2-1 is vulnerable to denial
    of service.
    
    Resolution
    ==========
    
    Upgrade to 2.42.2-1.
    
    # pacman -Syu "gdk-pixbuf2>=2.42.2-1"
    
    The problem has been fixed upstream in version 2.42.2.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    A security issue was found in gdk-pixbuf2 2.40.0 up to 2.42.0. A
    malformed GIF image could lead to an endless loop in the write_indexes
    function in gdk-pixbuf/lzw.c, taking full CPU resources and leading to
    a denial of service.
    
    Impact
    ======
    
    An attacker might be able to cause a denial of service via a crafted
    GIF image.
    
    References
    ==========
    
    https://mail.gnome.org/archives/distributor-list/2020-December/msg00000.html
    https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/164
    https://gitlab.gnome.org/GNOME/gdk-pixbuf/uploads/2838c96bb111a93d845b95c53b8953e3/gif_lzw_PoC.tar.gz
    https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/merge_requests/92
    https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/commit/bdd3acbd48a575d418ba6bf1b32d7bda2fae1c81
    https://security.archlinux.org/CVE-2020-29385
    

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