Insufficient Management of insPos Variable in Mozilla Firefox, Thunderbird, and SeaMonkey

CVE-2012-4187 · HIGH Severity

AV:N/AC:M/AU:N/C:C/I:C/A:C

Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 do not properly manage a certain insPos variable, which allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption and assertion failure) via unspecified vectors.

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