CVE-2021-31317
5.5
MEDIUM
CVSS 3.1
EPSS 0.17%
Description
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.
How to fix CVE-2021-31317
To remediate CVE-2021-31317, upgrade the affected package to a fixed version below.
- Debian/rlottie—upgrade to 0.1+dfsg-2 or later
Is CVE-2021-31317 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.1+dfsg-2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |