Out-of-bounds read in HTML parser following a failed allocation
- March 8, 2016
- Ronald Crane
- Firefox, Firefox ESR, Thunderbird
- Fixed in
- Firefox 45
- Firefox ESR 38.7
- Thunderbird 38.7
- Thunderbird 45
Security researcher Ronald Crane reported an out-of-bounds read following a failed allocation in the HTML parser while working with unicode strings. This can also affect the parsing of XML and SVG format data. This leads to a potentially exploitable crash.
In general this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled, but is potentially a risk in browser or browser-like contexts.