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cve[email protected]CVE-2021-31321
HistoryMay 18, 2021 - 8:15 p.m.

CVE-2021-31321

2021-05-1820:15:07
CWE-787
web.nvd.nist.gov
21
cve-2021-31321
telegram
android
ios
macos
stack based overflow
rlottie
remote attacker
memory overwrite
animated sticker
nvd

5.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:P/A:P

7.1 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

6.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

49.7%

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.

Affected configurations

NVD
Node
telegramtelegramRange<7.1.0android
OR
telegramtelegramRange<7.1.0iphone_os
OR
telegramtelegramRange<7.1.0macos
CPENameOperatorVersion
telegram:telegramtelegramlt7.1.0

5.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:P/A:P

7.1 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

6.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

49.7%

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