Vulnerability Report

CVE-2021-31321

Title: Telegram Stack Based Overflow in gray_split_cubic

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2021-31321.

CWE Category CWE-787
Published Date May 18, 2021
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.1 CVSS v3.1
Exploit Probability (EPSS)
1.10%

Vulnerability Summary

CVE-2021-31321: Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by a Stack Based Overflow in the gray_split_cubic function of their custom fork of the rlottie library. A remote attacker might be able to overwrite Telegram's stack memory out-of-bounds on a victim device via a malicious animated sticker.

Impacted Vendors

T
telegram 1

Reference Links

https://www.shielder.it/advisories/telegram-rlottie-gray_split_cubic-stack-buffer-overflow/ https://www.shielder.it/blog/2021/02/hunting-for-bugs-in-telegrams-animated-stickers-remote-attack-surface/ https://www.shielder.it/advisories/telegram-rlottie-gray_split_cubic-stack-buffer-overflow/ https://www.shielder.it/blog/2021/02/hunting-for-bugs-in-telegrams-animated-stickers-remote-attack-surface/
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.1
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
5.8
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:N/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-31321 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Affected Stack

No specific products linked.