The vulnerabilities of the functions AppendEncodedAttributeValue(), ExtraSpaceNeededForAttrEncoding(), and AppendEncodedCharacters() in browsers Mozilla Firefox, Firefox ESR, and the email client Thunderbird allow an attacker to execute arbitrary code.

The vulnerabilities of the functions AppendEncodedAttributeValue, ExtraSpaceNeededForAttrEncoding, and AppendEncodedCharacters in browsers such as Mozilla Firefox, Firefox ESR, and the email client Thunderbird are related to integer overflow. Exploiting these vulnerabilities allows a malicious...