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Debian LTS Advisory DLA-2705-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                         Anton Gladky
July 07, 2021                                 https://wiki.debian.org/LTS
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Package        : scilab
Version        : 5.5.2-4+deb9u1
CVE ID         : CVE-2021-30485 CVE-2021-31229 CVE-2021-31347 CVE-2021-31348 
                 CVE-2021-31598

Multiple issues have been discovered in scilab, particularly in ezXML embedded library:

CVE-2021-30485

    Descriptionincorrect memory handling, leading to a NULL pointer dereference
    in ezxml_internal_dtd()

CVE-2021-31229

    Out-of-bounds write in ezxml_internal_dtd() leading to out-of-bounds write
    of a one byte constant

CVE-2021-31347, CVE-2021-31348

    incorrect memory handling in ezxml_parse_str() leading to out-of-bounds read

CVE-2021-31598

    Out-of-bounds write in ezxml_decode() leading to heap corruption

For Debian 9 stretch, these problems have been fixed in version
5.5.2-4+deb9u1.

We recommend that you upgrade your scilab packages.

For the detailed security status of scilab please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/scilab

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