The needSamples method in AudioOutputSpeech.cpp in the client in Mumble 1.2.4 and the 1.2.3 pre-release snapshots, Mumble for iOS 1.1 through 1.2.2, and MumbleKit before commit fd190328a9b24d37382b269a5674b0c0c7a7e36d does not check the return value of the opus_decode_float function, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted Opus voice packet, which triggers an error in opus_decode_float, a conversion of a negative integer to an unsigned integer, and a heap-based buffer over-read and over-write.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mumble | Light_speed_gaming | 1.1 (including) | 1.1 (including) |
| Mumble | Light_speed_gaming | 1.1-rc1 (including) | 1.1-rc1 (including) |
| Mumble | Light_speed_gaming | 1.1.1 (including) | 1.1.1 (including) |
| Mumble | Light_speed_gaming | 1.2 (including) | 1.2 (including) |
| Mumble | Light_speed_gaming | 1.2.1 (including) | 1.2.1 (including) |
| Mumble | Light_speed_gaming | 1.2.2 (including) | 1.2.2 (including) |
| Mumble | Light_speed_gaming | 1.2.3-rc1 (including) | 1.2.3-rc1 (including) |
| Mumble | Light_speed_gaming | 1.2.3-rc2 (including) | 1.2.3-rc2 (including) |
| Mumble | Light_speed_gaming | 1.2.3-rc3 (including) | 1.2.3-rc3 (including) |
| Mumble | Light_speed_gaming | 1.2.4 (including) | 1.2.4 (including) |
| Mumblekit | Light_speed_gaming | - (including) | - (including) |
| Mumble | Ubuntu | lucid | * |
| Mumble | Ubuntu | precise | * |
| Mumble | Ubuntu | quantal | * |
| Mumble | Ubuntu | saucy | * |