TTCSIRT-154.080718: TT-CSIRT Advisory – Mozilla Security Updates

Mozilla has released a security update stating that it has found the following critical vulnerabilities within Mozilla Thunderbird ver 60.0:

a) Bug #1459162 – a buffer overflow can occur when rendering canvas content while adjusting the height and width of the canvas element dynamically, causing data to be written outside of the currently computed boundaries. This results in a potentially exploitable crash.

b) Bug #1459693 – a use-after-free vulnerability can occur when deleting an input element during a mutation event handler triggered by focusing that element. This results in a potentially exploitable crash.

c) Bug #1463244 – an integer overflow can occur in the SwizzleData code while calculating buffer sizes. The overflowed value is used for subsequent graphics computations when their inputs are not sanitized which results in a potentially exploitable crash.

d) Bug #1453127 – a vulnerability can occur when capturing a media stream when the media source type is changed as the capture is occuring. This can result in stream data being cast to the wrong type causing a potentially exploitable crash.

e) Bug #1436241 – NPAPI plugins, such as Adobe Flash, can send non-simple cross-origin requests, bypassing CORS by making a same-origin POST that does a 307 redirect to the target site. This allows for a malicious site to engage in cross-site request forgery (CSRF) attacks.