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AUSCERT External Security Bulletin Redistribution
ESB-2018.0603
Multiple vulnerabilities have been identified in freexl
2 March 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: freexl
Publisher: Debian
Operating System: Debian GNU/Linux 7
Linux variants
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-7439 CVE-2018-7438 CVE-2018-7437
CVE-2018-7436 CVE-2018-7435
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running freexl check for an updated version of the software for
their operating system.
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Package : freexl
Version : 1.0.0b-1+deb7u5
CVE ID : CVE-2018-7435 CVE-2018-7436 CVE-2018-7437 CVE-2018-7438
CVE-2018-7439
Leon reported five heap-based buffer-overflow vulnerabilities in FreeXL.
CVE-2018-7435
There is a heap-based buffer over-read in the freexl::destroy_cell
function.
CVE-2018-7436
There is a heap-based buffer over-read in a pointer dereference of
the parse_SST function.
CVE-2018-7437
There is a heap-based buffer over-read in a memcpy call of the
parse_SST function.
CVE-2018-7438
There is a heap-based buffer over-read in the parse_unicode_string
function.
CVE-2018-7439
There is a heap-based buffer over-read in the function
read_mini_biff_next_record.
For Debian 7 "Wheezy", these problems have been fixed in version
1.0.0b-1+deb7u5.
We recommend that you upgrade your freexl 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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