vcodec2_hls_filter in in the WeChat application through 7.0.3 for Android allows attackers to cause a denial of service (application crash) by replacing an emoji file (under the /sdcard/tencent/MicroMsg directory) with a crafted .wxgf file. The content of the replacement must be derived from the phone's IMEI. The crash occurs upon receiving a message that contains the replaced emoji.

  • Published Date: Tuesday 14th of May 2019 03:29:00 PM
  • Modified Date: Wednesday 15th of May 2019 08:24:59 AM
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