CVE-2021-31317: Medium severity allegro vulnerability

Published May 18, 2021
·
Updated

Last updated 24 July 2024

Other sources

Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by a Type Confusion in the VDasher constructor of their custom fork of the rlottie library. A remote attacker might be able to access Telegram's heap memory out-of-bounds on a victim device via a malicious animated sticker.

Affected Software

4 affected componentsFixes available
debian/rlottie
0.1+dfsg-20.1+dfsg-40.1+dfsg-4.2
Telegram Telegram Android<7.1.0
Telegram Telegram Iphone Os<7.1.0
Telegram Telegram macOS<7.1.0

Event History

May 18, 2021
CVE Published
via MITRE·07:44 PM
Data Sourced
via MITRE·07:44 PM
Description
Jan 14, 2025
Data Sourced
via Ubuntu·01:44 AM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Launchpad·01:46 AM
Description
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Frequently Asked Questions

1

What is the vulnerability ID for this Telegram issue?

The vulnerability ID for this Telegram issue is CVE-2021-31317.

2

What is the affected software?

The affected software includes Telegram Android versions before 7.1.0 (2090), Telegram iOS versions before 7.1, and Telegram macOS versions before 7.1.

3

What is the severity level of CVE-2021-31317?

The severity level of CVE-2021-31317 is medium with a severity value of 5.5.

4

What is the vulnerability description?

Telegram Android, iOS, and macOS versions before 7.1 are affected by a Type Confusion vulnerability in the VDasher constructor of their custom fork of the rlottie library.

5

How can a remote attacker exploit this vulnerability?

A remote attacker might be able to access Telegram's heap memory out-of-bounds on a victim device via a malicious animation.

Contact

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