CVE-2020-7881

CVSS V2 Medium 6.5 CVSS V3 High 8.8

Description

The vulnerability function is enabled when the streamer service related to the AfreecaTV communicated through web socket using 21201 port. A stack-based buffer overflow leading to remote code execution was discovered in strcpy() operate by "FanTicket" field. It is because of stored data without validation of length.

Overview

CVE ID
CVE-2020-7881

Assigner
vuln@krcert.or.kr

Vulnerability Status
Analyzed

Published Version
2021-11-26T17:15:07

Last Modified Date
2022-07-08T18:20:14

Weakness Enumerations

CWE	URL
CWE-787	http://cwe.mitre.org/data/definitions/787.html

CPE Configuration (Product)

CPE	Vulnerable	Operator
		AND
cpe:2.3:a:afreecatv:afreecatv:1.0.0.1:::::::*	1	OR
cpe:2.3:o:microsoft:windows:-:::::::*	0	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:S/C:P/I:P/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
SINGLE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
6.5

Severity
MEDIUM

Exploitability Score
8

Impact Score
6.4

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
8.8

Base Severity
HIGH

Exploitability Score
2.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36357	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-7881
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7881

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:44:29				Added to TrackCVE
2022-12-05 15:11:31	2021-11-26T17:15Z	2021-11-26T17:15:07	CVE Published Date	updated
2022-12-05 15:11:31		2022-07-08T18:20:14	CVE Modified Date	updated
2022-12-05 15:11:31		Analyzed	Vulnerability Status	updated