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ZephyrCVELIST:CVE-2021-3321

HistoryOct 12, 2021 - 9:50 p.m.

CVE-2021-3321 Integer Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal

2021-10-1221:50:13

CWE-680

zephyr

www.cve.org

zephyr

ieee 802154

fragment reassembly

integer underflow

buffer overflow

cwe-680

CVSS3

7.5

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

HIGH

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

AI Score

8.9

Confidence

High

EPSS

0.001

Percentile

45.0%

JSON

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

CNA Affected

[
  {
    "product": "zephyr",
    "vendor": "zephyrproject-rtos",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": ">=2.4.0",
        "versionType": "custom"
      }
    ]
  }
]

References

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

CVSS3

7.5

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

HIGH

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

AI Score

8.9

Confidence

High

EPSS

0.001

Percentile

45.0%

JSON

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