security flaw

Heap-based buffer overflow in the UTF8ToNewUnicode function for Firefox before 1.0.1 and Mozilla before 1.7.6 might allow remote attackers to cause a denial of service crash or execute arbitrary code via invalid sequences in a UTF8 encoded string that result in a zero length value...

Heap overflow possible in UTF8 to Unicode conversion — Mozilla

It is possible for a UTF8 string with invalid sequences to trigger a heap overflow of converted Unicode data. Exploitability would depend on the attackers ability to get the string into the buggy converter. General web content is converted elsewhere but we can't rule out the possibility of a...

jabberd DoS

Server crashes on UTF8 data...

Mozilla contains heap overflow in UTF8 conversion of hostname portion of URLs

Overview A vulnerability in the way Mozilla and its derived programs handle certain malformed URLs could allow a remote attacker to execute arbitrary code on a vulnerable system. Description A vulnerability exists in the way that some versions of the Mozilla and Firefox web browsers, and...