Several flaws were discovered in the JavaScript engine of Thunderbird. If a user had JavaScript enabled and were tricked into viewing malicious web content, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. Josh Soref discovered that the BinHex decoder used in Thunderbird contained a flaw. If a user were tricked into viewing malicious content, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. It was discovered that Thunderbird did not properly manage memory when using XUL tree elements. If a user were tricked into viewing malicious content, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. Jesse Ruderman and Sid Stamm discovered that Thunderbird did not properly display filenames containing right-to-left override characters. If a user were tricked into opening a malicious file with a crafted filename, an attacker could exploit this to trick the user into opening a different file than the user expected. Takehiro Takahashi discovered flaws in the NTLM implementation in Thunderbird. If an NTLM authenticated user opened content containing links to a malicious website, a remote attacker could send requests to other applications, authenticated as the user. Ludovic Hirlimann discovered a flaw in the way Thunderbird indexed certain messages with attachments. A remote attacker could send specially crafted content and cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program