CVE-2021-3321 — Integer Overflow to Buffer Overflow in Zephyr

CWE-680 — Integer Overflow to Buffer OverflowCWE-191 — Integer Underflow (Wrap or Wraparound)2 documents2 sources
Severity
8.8HIGHNVD
CNA7.5
EPSS
0.1%
top 69.73%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Zephyrproject-rtos ZephyrZephyrproject Zephyr
Timeline
PublishedOct 12

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

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages2 packages

▶CVEListV5zephyrproject-rtos/zephyr>=2.4.0 — unspecified
▶NVDzephyrproject/zephyr2.4.0 — 2.5.0

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

1
CVEList
Integer Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal↗2021-10-12
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CVE-2021-3321 — Integer Overflow to Buffer Overflow | cvebase