Integer Overflow Vulnerability in Telegram Mobile and Desktop Applications
CVE-2021-31319

5.5MEDIUM

Key Information:

Vendor

Telegram

Status
Telegram
Vendor
CVE Published:
18 May 2021

What is CVE-2021-31319?

The Telegram applications for Android, iOS, and macOS exhibit an integer overflow vulnerability within the LOTGradient::populate function from their modified rlottie library. This flaw allows remote attackers to potentially manipulate animated stickers to gain unauthorized access to heap memory, leading to possible exploitation of the victim's device.

References

https://www.shielder.it/blog/2021/02/hunting-for-bugs-in-...
x_refsource_MISC
https://www.shielder.it/advisories/telegram-rlottie-lotgr...
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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