CVE-2021-27247 – Tencent WeChat WXAM Decoder Out-Of-Bounds Read Information Disclosure Vulnerability
https://notcve.org/view.php?id=CVE-2021-27247
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Tencent WeChat 2.9.5 desktop version. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the WXAM decoder. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. • https://www.zerodayinitiative.com/advisories/ZDI-21-217 • CWE-125: Out-of-bounds Read •
CVE-2019-17151 – Tencent WeChat name Field Unsafe Redirection Vulnerability
https://notcve.org/view.php?id=CVE-2019-17151
This vulnerability allows remote attackers redirect users to an external resource on affected installations of Tencent WeChat Prior to 7.0.9. User interaction is required to exploit this vulnerability in that the target must be within a chat session together with the attacker. The specific flaw exists within the parsing of a users profile. The issue lies in the failure to properly validate a users name. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. • https://www.zerodayinitiative.com/advisories/ZDI-19-1035 • CWE-356: Product UI does not Warn User of Unsafe Actions CWE-601: URL Redirection to Untrusted Site ('Open Redirect') •
CVE-2019-11419 – WeChat for Android 7.0.4 - 'vcodec2_hls_filter' Denial of Service
https://notcve.org/view.php?id=CVE-2019-11419
vcodec2_hls_filter in libvoipCodec_v7a.so 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. vcodec2_hls_filter en libvoipCodec_v7a.so en la aplicación WeChat hasta 7.0.3 para Android permite a los atacantes provocar una denegación de servicio (bloqueo de la aplicación) al reemplazar un archivo emoji (bajo el directorio / sdcard / tencent / MicroMsg) con un archivo .wxgg crafted. El contenido del reemplazo debe derivarse del IMEI del teléfono. El bloqueo se produce al recibir un mensaje que contiene el emoji reemplazado. • https://www.exploit-db.com/exploits/46853 http://packetstormsecurity.com/files/152947/WeChat-7.0.4-Denial-Of-Service.html https://awakened1712.github.io/hacking/hacking-wechat-dos • CWE-476: NULL Pointer Dereference •