Joined: 12 May 2004
|Posted: Wed Jul 11, 2007 8:26 pm Post subject: [ GLSA 200707-06 ] XnView: Stack-based buffer overflow
|Gentoo Linux Security Advisory
Title: XnView: Stack-based buffer overflow (GLSA 200707-06)
Date: July 11, 2007
XnView is vulnerable to a stack-based buffer overflow and possible remote code execution when handling XPM image files.
XnView is software to view and convert graphics files. XPixMap (XPM) is a simple ascii-based graphics format.
Vulnerable: < 1.70
XnView is vulnerable to a stack-based buffer overflow while processing an XPM file with an overly long section string (greater than 1024 bytes).
An attacker could entice a user to view a specially crafted XPM file with XnView that could trigger the vulnerability and possibly execute arbitrary code with the rights of the user running XnView.
There is no known workaround at this time.
No update appears to be forthcoming from the XnView developer and XnView is proprietary, so the XnView package has been masked in Portage. We recommend that users select an alternate graphics viewer and conversion utility, and unmerge XnView:
|# emerge --unmerge xnview |