Vulnerability Details : CVE-2021-31323
Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by a Heap Buffer Overflow in the LottieParserImpl::parseDashProperty 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: OverflowMemory Corruption
Products affected by CVE-2021-31323
- cpe:2.3:a:telegram:telegram:*:*:*:*:*:macos:*:*
- cpe:2.3:a:telegram:telegram:*:*:*:*:*:iphone_os:*:*
- cpe:2.3:a:telegram:telegram:*:*:*:*:*:android:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31323
0.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 53 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31323
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
NIST | |
|
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
|
NIST |
CWE ids for CVE-2021-31323
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-31323
-
https://www.shielder.it/advisories/telegram-rlottie-lottieparserimpl-parsedashproperty-heap-buffer-overflow/
Shielder - Telegram rlottie 7.0.1_2065 LottieParserImpl::parseDashProperty Heap Buffer OverflowExploit;Third Party Advisory
-
https://www.shielder.it/blog/2021/02/hunting-for-bugs-in-telegrams-animated-stickers-remote-attack-surface/
Shielder - Hunting for bugs in Telegram's animated stickers remote attack surfaceExploit;Third Party Advisory
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