ESB-2018.0670 - [Debian] leptonlib: Denial of service - Remote with user interaction 2018-03-08

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0670
                         leptonlib security update
                               8 March 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           leptonlib
Publisher:         Debian
Operating System:  Debian GNU/Linux 7
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-7440 CVE-2018-7186 CVE-2018-3836

Reference:         ESB-2018.0479

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2018/03/msg00005.html

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Package        : leptonlib
Version        : 1.69-3.1+deb7u2
CVE ID         : CVE-2018-7186 CVE-2018-7440
Debian Bug     : 890548 891932


Different flaws have been found in leptonlib, an image processing
library.

CVE-2018-7186

    Leptonica did not limit the number of characters in a %s format
    argument to fscanf or sscanf, that made it possible to remote
    attackers to cause a denial of service (stack-based buffer overflow)
    or possibly have unspecified other impact via a long string.

CVE-2018-7440

    The gplotMakeOutput function allowed command injection via a
    $(command) approach in the gplot rootname argument. This issue
    existed because of an incomplete fix for CVE-2018-3836.

For Debian 7 "Wheezy", these problems have been fixed in version
1.69-3.1+deb7u2.

We recommend that you upgrade your leptonlib 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

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