CVE-2021-31320: Buffer Overflow
First published: Tue May 18 2021(Updated: )
Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by a Heap Buffer Overflow in the VGradientCache::generateGradientColorTable function of their custom fork of the rlottie library. A remote attacker might be able to overwrite heap memory out-of-bounds on a victim device via a malicious animated sticker.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Telegram Telegram | <7.1.0 | |
| Telegram Telegram | <7.1.0 | |
| Telegram Telegram | <7.1.0 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2021-31320.
Which versions of Telegram are affected by this vulnerability?
Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected.
What is the severity rating for CVE-2021-31320?
The severity rating for CVE-2021-31320 is high with a value of 7.1.
What is the CWE ID for this vulnerability?
The CWE ID for this vulnerability is CWE-119 and CWE-787.
How can I learn more about this vulnerability?
You can find more information about this vulnerability at the following references: [reference 1](https://www.shielder.it/advisories/telegram-rlottie-vgradientcache-generategradientcolortable-heap-buffer-overflow/) and [reference 2](https://www.shielder.it/blog/2021/02/hunting-for-bugs-in-telegrams-animated-stickers-remote-attack-surface/).
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