[SECURITY] [DLA 1098-1] freexl security update

Package : freexl
Version : 1.0.0b-1+deb7u4
CVE ID : CVE-2017-2923 CVE-2017-2924
Debian Bug : #875690 #875691

The Cisco Talos team reported two sensitive security issues affecting
FreeXL-1.0.3 and any previous version.

CVE-2017-2923

An exploitable heap based buffer overflow vulnerability exists in
the read_biff_next_record function of FreeXL 1.0.3. A specially
crafted XLS file can cause a memory corruption resulting in remote
code execution. An attacker can send malicious XLS file to trigger
this vulnerability.

CVE-2017-2924

An exploitable heap-based buffer overflow vulnerability exists in
the read_legacy_biff function of FreeXL 1.0.3. A specially crafted
XLS file can cause a memory corruption resulting in remote code
execution. An attacker can send malicious XLS file to trigger this
vulnerability.

For Debian 7 "Wheezy", these problems have been fixed in version
1.0.0b-1+deb7u4.

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