Vulnerability Details : CVE-2021-30496
The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service (application crash) if the victim pastes an attacker-supplied message (e.g., in the Persian language) into a channel or group. The crash occurs in MtProtoKitFramework. NOTE: the vendor's perspective is that "this behavior can't be considered a vulnerability."
Vulnerability category: Denial of service
Products affected by CVE-2021-30496
- cpe:2.3:a:telegram:telegram:7.6.2:*:*:*:*:iphone_os:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-30496
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 46 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-30496
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:N/A:P |
6.8
|
2.9
|
NIST | |
|
5.7
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
2.1
|
3.6
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2024-07-03 |
|
5.7
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
2.1
|
3.6
|
NIST |
CWE ids for CVE-2021-30496
-
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
References for CVE-2021-30496
-
https://t.me/joinchat/bJ9cnUosVh03ZTI0
Telegram: Join Group ChatVendor Advisory
-
https://gist.github.com/raminfp/bf64c2974ee6949787329749148a4b31
telegram_crash.log ยท GitHubExploit;Third Party Advisory
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