libxls is a C library for reading Excel files in the nasty old binary OLE format, plus a command-line tool for converting XLS to CSV.
Multiple vulnerabilities have been discovered in libxls. Please review the CVE identifiers referenced below for details.
A remote attacker could entice a user to process a specially crafted Excel file using libxls, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.
There is no known workaround at this time.
All libxls users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libxls-1.5.2"