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CVE-2021-3321

Date: October 12, 2021

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

Language: C

Severity Score

7.5

Related Resources (3)

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-3321

Url: http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99

Url: https://www.mend.io/vulnerability-database/CVE-2021-3321

Severity Score

7.5

Weakness Type (CWE)

Integer Underflow (Wrap or Wraparound)

CWE-191

Integer Overflow to Buffer Overflow

CWE-680

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	ADJACENT_NETWORK
Attack Complexity (AC):	HIGH
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	CHANGED
Confidentiality (C):	LOW
Integrity (I):	LOW
Availability (A):	HIGH

CVSS v2

Base Score:	5.8
Access Vector (AV):	ADJACENT
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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