Stack-based buffer overflow in the load_preset_response function in plug-ins/lighting/lighting-ui.c in the "LIGHTING EFFECTS > LIGHT" plugin in GIMP 2.6.11 allows user-assisted remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a long Position field in a plugin configuration file. NOTE: it may be uncommon to obtain a GIMP plugin configuration file from an untrusted source that is separate from the distribution of the plugin itself. NOTE: some of these details are obtained from third party information.
https://exchange.xforce.ibmcloud.com/vulnerabilities/64582
http://www.debian.org/security/2012/dsa-2426
http://security.gentoo.org/glsa/glsa-201209-23.xml
http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html