CVE-2021-3321

CVSS V2 Medium 5.8 CVSS V3 High 8.8

Description

Integer Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal. Zephyr versions >= >=2.4.0 contain Integer Overflow to Buffer Overflow (CWE-680). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99

Overview

CVE ID
CVE-2021-3321

Assigner
vulnerabilities@zephyrproject.org

Vulnerability Status
Analyzed

Published Version
2021-10-12T22:15:07

Last Modified Date
2021-10-18T17:52:14

Weakness Enumerations

CWE	URL
CWE-191	http://cwe.mitre.org/data/definitions/191.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:o:zephyrproject:zephyr::::::::	1	OR	2.4.0	2.5.0

CVSS Version 2

Version
2.0

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

Access Vector
ADJACENT_NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
5.8

Severity
MEDIUM

Exploitability Score
6.5

Impact Score
6.4

CVSS Version 3

Version
3.1

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

Attack Vector
ADJACENT_NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

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
http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99	Exploit Patch Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-3321
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3321

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:51:18				Added to TrackCVE
2022-12-05 12:17:01	2021-10-12T22:15Z	2021-10-12T22:15:07	CVE Published Date	updated
2022-12-05 12:17:01		2021-10-18T17:52:14	CVE Modified Date	updated
2022-12-05 12:17:01		Analyzed	Vulnerability Status	updated