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.

CVSS v3.1

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS v2.0

4.3 MEDIUMAV:N/AC:M/Au:N/C:P/I:N/A:N

EPSS

1.29% chance of exploitation in the next 30 days, 68th percentile

Published

2021-05-18

Updated

2024-08-03

Proof-of-concept exploits (1)

• https://www.shielder.it/advisories/telegram-rlottie-vdasher-vdasher-type-confusion/

References

• CVE Record
• NVD entry

Related

• CVE-2021-31316
• CVE-2021-31318
• CVE-2021-31315
• CVE-2021-31319
• CVE-2021-3130
• CVE-2021-31320