Vulnerability Details : CVE-2021-31319
Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by an Integer Overflow in the LOTGradient::populate function of their custom fork of the rlottie library. A remote attacker might be able to access heap memory out-of-bounds on a victim device via a malicious animated sticker.
Vulnerability category: Overflow
Exploit prediction scoring system (EPSS) score for CVE-2021-31319
Probability of exploitation activity in the next 30 days: 0.14%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 49 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-31319
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
[email protected] |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
1.8
|
3.6
|
[email protected] |
CWE ids for CVE-2021-31319
-
The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.Assigned by: [email protected] (Primary)
References for CVE-2021-31319
-
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-lotgradient-populate-integer-overflow/
Exploit;Third Party Advisory
Products affected by CVE-2021-31319
- cpe:2.3:a:telegram:telegram:*:*:*:*:*:macos:*:*
- cpe:2.3:a:telegram:telegram:*:*:*:*:*:iphone_os:*:*
- cpe:2.3:a:telegram:telegram:*:*:*:*:*:android:*:*