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CVE-2022-41873— Contiki-NG 缓冲区错误漏洞

一分钟漏洞结论

影响对象
contiki-ng contiki-ng
利用判断
尚无明确在野利用证据,仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本;无法立即升级时,限制受影响服务暴露并加强监测。

Contiki-NG是一套用于下一代IoT(物联网)设备的开源跨平台操作系统。 Contiki-NG存在安全漏洞,该漏洞源于其BLE L2CAP模块允许攻击者实现越界读取。

CVSS 4.2 · Medium EPSS 0.26% · P18
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一、 漏洞 CVE-2022-41873 基础信息

漏洞信息

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Vulnerability Title
Out-of-bounds read and write in BLE L2CAP module
来源: CVE Program / CVE List V5
Vulnerability Description
Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. Versions prior to 4.9 are vulnerable to an Out-of-bounds read. While processing the L2CAP protocol, the Bluetooth Low Energy stack of Contiki-NG needs to map an incoming channel ID to its metadata structure. While looking up the corresponding channel structure in get_channel_for_cid (in os/net/mac/ble/ble-l2cap.c), a bounds check is performed on the incoming channel ID, which is meant to ensure that the channel ID does not exceed the maximum number of supported channels.However, an integer truncation issue leads to only the lowest byte of the channel ID to be checked, which leads to an incomplete out-of-bounds check. A crafted channel ID leads to out-of-bounds memory to be read and written with attacker-controlled data. The vulnerability has been patched in the "develop" branch of Contiki-NG, and will be included in release 4.9. As a workaround, Users can apply the patch in Contiki-NG pull request 2081 on GitHub.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
来源: CVE Program / CVE List V5
Vulnerability Title
Contiki-NG 缓冲区错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Contiki-NG是一套用于下一代IoT(物联网)设备的开源跨平台操作系统。 Contiki-NG存在安全漏洞,该漏洞源于其BLE L2CAP模块允许攻击者实现越界读取。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
contiki-ng contiki-ng < 4.9 -

二、漏洞 CVE-2022-41873 的公开POC

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三、漏洞 CVE-2022-41873 的情报信息

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CVE-2022-41873 补丁与修复 (1)

CVE-2022-41873 厂商安全公告 (1)

IV. Related Vulnerabilities

V. Comments for CVE-2022-41873

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