The vulnerability of the SeaMonkey software allows a malicious actor to compromise the confidentiality, integrity, and accessibility of protected information.

The use of this function after release in nsTextEditRules::CreateMozBR in Mozilla Firefox, Firefox ESR, and Thunderbird allows malicious actors operating remotely to execute arbitrary code or cause service failures errors in handling dynamic memory...

Mozilla: Use-after-free and out of bounds issues found using Address Sanitizer (MFSA 2014-49)

Use-after-free vulnerability in the nsTextEditRules::CreateMozBR function in Mozilla Firefox before 30.0, Firefox ESR 24.x before 24.6, and Thunderbird before 24.6 allows remote attackers to execute arbitrary code or cause a denial of service heap memory corruption via unspecified vectors...