CVEs-PoC/2021/CVE-2021-31321.md

### [CVE-2021-31321](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31321)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by a Stack Based Overflow in the gray_split_cubic function of their custom fork of the rlottie library. A remote attacker might be able to overwrite Telegram's stack memory out-of-bounds on a victim device via a malicious animated sticker.

### POC

#### Reference
- https://www.shielder.it/advisories/telegram-rlottie-gray_split_cubic-stack-buffer-overflow/

#### Github
No PoCs found on GitHub currently.