CVE-2023-41893— Home Assistant 信息泄露漏洞
一分钟漏洞结论
影响对象
home-assistant core
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。
Home Assistant是一套开源的家庭自动化管理系统。该系统主要用于控制家庭自动化设备。 Home Assistant 2023.9.0之前版本存在信息泄露漏洞，该漏洞源于允许攻击者通过auth_callback登录接管帐户。
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一、 漏洞 CVE-2023-41893 基础信息
漏洞信息
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Vulnerability Title
Account takeover via auth_callback login in Home Assistant Core
来源: CVE Program / CVE List V5
Vulnerability Description
Home assistant is an open source home automation. The audit team’s analyses confirmed that the `redirect_uri` and `client_id` are alterable when logging in. Consequently, the code parameter utilized to fetch the `access_token` post-authentication will be sent to the URL specified in the aforementioned parameters. Since an arbitrary URL is permitted and `homeassistant.local` represents the preferred, default domain likely used and trusted by many users, an attacker could leverage this weakness to manipulate a user and retrieve account access. Notably, this attack strategy is plausible if the victim has exposed their Home Assistant to the Internet, since after acquiring the victim’s `access_token` the adversary would need to utilize it directly towards the instance to achieve any pertinent malicious actions. To achieve this compromise attempt, the attacker must send a link with a `redirect_uri` that they control to the victim’s own Home Assistant instance. In the eventuality the victim authenticates via said link, the attacker would obtain code sent to the specified URL in `redirect_uri`, which can then be leveraged to fetch an `access_token`. Pertinently, an attacker could increase the efficacy of this strategy by registering a near identical domain to `homeassistant.local`, which at first glance may appear legitimate and thereby obfuscate any malicious intentions. This issue has been addressed in version 2023.9.0 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
信息暴露
来源: CVE Program / CVE List V5
Vulnerability Title
Home Assistant 信息泄露漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Home Assistant是一套开源的家庭自动化管理系统。该系统主要用于控制家庭自动化设备。 Home Assistant 2023.9.0之前版本存在信息泄露漏洞，该漏洞源于允许攻击者通过auth_callback登录接管帐户。
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 |
|---|---|---|---|---|
| home-assistant | core | < 2023.9.0 | - |
|
二、漏洞 CVE-2023-41893 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2023-41893 厂商安全公告 (1)
-
https://github.com/home-assistant/core/security/advisories/GHSA-qhhj-7hrc-gqj5 x_refsource_CONFIRM
CVE-2023-41893 安全博客文章 (1)
同批安全公告 · home-assistant · 2023-10-19 · 共 8 条
| CVE-2023-41897 | 8.8 HIGH | Home Assistant 安全漏洞 |
| CVE-2023-41895 | 8.8 HIGH | Home Assistant 跨站脚本漏洞 |
| CVE-2023-44385 | 8.6 HIGH | Home Assistant Companion 跨站请求伪造漏洞 |
| CVE-2023-41898 | 8.6 HIGH | Home Assistant 代码注入漏洞 |
| CVE-2023-41896 | 7.1 HIGH | Home Assistant 数据伪造问题漏洞 |
| CVE-2023-41899 | 6.6 MEDIUM | Home Assistant 代码问题漏洞 |
| CVE-2023-41894 | 5.3 MEDIUM | Home Assistant 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2023-41893
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