Type Confusion Vulnerability in Telegram's Custom Fork of Rlottie Library
CVE-2021-31317

5.5MEDIUM

Key Information:

Vendor

Telegram

Status
Telegram
Vendor
CVE Published:
18 May 2021

What is CVE-2021-31317?

A vulnerability exists in Telegram for Android, iOS, and macOS versions prior to 7.1 that stems from a Type Confusion in the VDasher constructor of the rlottie library. This flaw allows remote attackers to exploit the application through specially crafted animated stickers, potentially leading to unauthorized access of heap memory on the victim's device. Such exploitation could facilitate a range of security risks, highlighting the importance of updating to the latest version to mitigate this issue.

References

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