CVE-2021-3320— Type Confusion in 802154 ACK Frames Handling
Quick assessment
Affected
zephyrproject-rtos zephyr
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Zephyr是美国Linux基金会的一套开源的小型的可缩放的实时操作系统。 Zephyr 2.4.0之前版本存在代码问题漏洞，该漏洞源于802154 ACK帧处理中的类型混淆。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-3320
Vulnerability Information
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Vulnerability Title
Type Confusion in 802154 ACK Frames Handling
Source: CVE Program / CVE List V5
Vulnerability Description
Type Confusion in 802154 ACK Frames Handling. Zephyr versions >= v2.4.0 contain NULL Pointer Dereference (CWE-476). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-27r3-rxch-2hm7
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Zephyr 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zephyr是美国Linux基金会的一套开源的小型的可缩放的实时操作系统。 Zephyr 2.4.0之前版本存在代码问题漏洞，该漏洞源于802154 ACK帧处理中的类型混淆。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| zephyrproject-rtos | zephyr | v2.4.0 ~ unspecified | - |
|
II. Public POCs for CVE-2021-3320
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-3320 (1)
Same Patch Batch · zephyrproject-rtos · 2021-05-24 · 12 CVEs total
| CVE-2020-13601 | 9.0 CRITICAL | Possible read out of bounds in dns read |
| CVE-2020-10064 | 8.3 HIGH | Improper Input Frame Validation in ieee802154 Processing |
| CVE-2020-13600 | 7.0 HIGH | Malformed SPI in response for eswifi can corrupt kernel memory |
| CVE-2020-13603 | 6.9 MEDIUM | Integer Overflow in memory allocating functions |
| CVE-2020-13598 | 6.3 MEDIUM | FS: Buffer Overflow when enabling Long File Names in FAT_FS and calling fs_stat |
| CVE-2020-10072 | 5.9 MEDIUM | Improper Handling of Insufficient Permissions or Privileges in zephyr |
| CVE-2020-10069 | 4.3 MEDIUM | Zephyr Bluetooth unchecked packet data results in denial of service |
| CVE-2020-13602 | 4.0 MEDIUM | Remote Denial of Service in LwM2M do_write_op_tlv |
| CVE-2020-10065 | 3.8 LOW | Missing Size Checks in Bluetooth HCI over SPI |
| CVE-2020-13599 | 3.3 LOW | Security problem with settings and littlefs |
| CVE-2020-10066 | 2.5 LOW | Incorrect Error Handling in Bluetooth HCI core |
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V. Comments for CVE-2021-3320
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