CVE Vulnerability

CVE-2021-31317

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.shielder.it/blog/2021/02/hunting-for-bugs-in-telegrams-animated-stickers-remote-attack-surface/ Exploit Third Party Advisory
https://www.shielder.it/advisories/telegram-rlottie-vdasher-vdasher-type-confusion/ Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:telegram:telegram:*:*:*:*:*:android:*:*
cpe:2.3:a:telegram:telegram:*:*:*:*:*:iphone_os:*:*
cpe:2.3:a:telegram:telegram:*:*:*:*:*:macos:*:*
Information

Published : 2021-05-18 08:15

Updated : 2021-05-25 06:09

NVD link : CVE-2021-31317

Mitre link : CVE-2021-31317

Products Affected
No products.
CWE
CWE-843