The js_dtoa function in Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird before 1.5.0.9, and SeaMonkey before 1.0.7 overwrites memory instead of exiting when the floating point precision is reduced, which allows remote attackers to cause a denial of service via any plugins that reduce the precision.
http://www.ubuntu.com/usn/usn-400-1
http://www.ubuntu.com/usn/usn-398-2
http://www.ubuntu.com/usn/usn-398-1
http://www.kb.cert.org/vuls/id/427972
http://www.gentoo.org/security/en/glsa/glsa-200701-04.xml
http://www.debian.org/security/2007/dsa-1265
https://euvd.enisa.europa.eu/vulnerability/EUVD-2006-6482
http://www.vupen.com/english/advisories/2008/0083
http://www.vupen.com/english/advisories/2007/1124
http://www.vupen.com/english/advisories/2006/5068
http://www.us-cert.gov/cas/techalerts/TA06-354A.html
http://www.securityfocus.com/bid/21668
http://www.novell.com/linux/security/advisories/2007_06_mozilla.html
http://www.novell.com/linux/security/advisories/2006_80_mozilla.html
http://www.mozilla.org/security/announce/2006/mfsa2006-68.html
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102846-1
http://securitytracker.com/id?1017406
http://securitytracker.com/id?1017405
http://securitytracker.com/id?1017398
http://security.gentoo.org/glsa/glsa-200701-02.xml
http://secunia.com/advisories/24390
http://secunia.com/advisories/24078
http://secunia.com/advisories/23988
http://secunia.com/advisories/23692
http://secunia.com/advisories/23672
http://secunia.com/advisories/23614
http://secunia.com/advisories/23591
http://secunia.com/advisories/23589
http://secunia.com/advisories/23545
http://secunia.com/advisories/23422
http://secunia.com/advisories/23420
http://secunia.com/advisories/23282
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742