Debian LTS: DLA-2264-1: libvncserver security update

    Date 30 Jun 2020
    147
    Posted By LinuxSecurity Advisories
    Several vulnerabilities have been discovered in libVNC (libvncserver Debian package), an implemenantation of the VNC server and client protocol.
    Package        : libvncserver
    Version        : 0.9.9+dfsg2-6.1+deb8u8
    CVE ID         : CVE-2019-20839 CVE-2020-14397 CVE-2020-14399 CVE-2020-14400 
                     CVE-2020-14401 CVE-2020-14402 CVE-2020-14403 CVE-2020-14404 
                     CVE-2020-14405
    Debian Bug     : 
    
    
    Several vulnerabilities have been discovered in libVNC (libvncserver Debian package), an
    implemenantation of the VNC server and client protocol.
    
    CVE-2019-20839
    
        libvncclient/sockets.c in LibVNCServer had a buffer overflow via a
        long socket filename.
    
    CVE-2020-14397
    
        libvncserver/rfbregion.c had a NULL pointer dereference.
    
    CVE-2020-14399
    
        Byte-aligned data was accessed through uint32_t pointers in
        libvncclient/rfbproto.c.
    
    CVE-2020-14400
    
        Byte-aligned data was accessed through uint16_t pointers in
        libvncserver/translate.c.
    
    CVE-2020-14401
    
        libvncserver/scale.c had a pixel_value integer overflow.
    
    CVE-2020-14402
    
        libvncserver/corre.c allowed out-of-bounds access via encodings.
    
    CVE-2020-14403
    
        libvncserver/hextile.c allowed out-of-bounds access via encodings.
    
    CVE-2020-14404
    
        libvncserver/rre.c allowed out-of-bounds access via encodings.
    
    CVE-2020-14405
    
        libvncclient/rfbproto.c does not limit TextChat size.
    
    For Debian 8 "Jessie", these problems have been fixed in version
    0.9.9+dfsg2-6.1+deb8u8.
    
    We recommend that you upgrade your libvncserver packages.
    
    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS
    
    -- 
    
    mike gabriel aka sunweaver (Debian Developer)
    fon: +49 (1520) 1976 148
    
    GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22  0782 9AF4 6B30 2577 1B31
    mail: This email address is being protected from spambots. You need JavaScript enabled to view it., https://sunweavers.net
    
    

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