目标达成 感谢每一位支持者 — 我们达成了 100% 目标！

目标: 1000 元 · 已筹: 1359 元

100%
请我们喝杯咖啡

CVE-2021-21261— Flatpak 注入漏洞

一分钟漏洞结论

影响对象
flatpak flatpak
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。

Flatpak是一套用于Linux桌面应用计算机环境的应用程序虚拟化系统。 Flatpak 存在注入漏洞，该漏洞源于flatpak-portal允许沙箱应用程序在主机系统上执行任意代码(沙箱逃脱)。

CVSS 7.3 · High EPSS 0.57% · P45
获取后续新漏洞提醒 登录后订阅

一、 漏洞 CVE-2021-21261 基础信息

漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗

尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。

Vulnerability Title
Flatpak sandbox escape via spawn portal
来源: CVE Program / CVE List V5
Vulnerability Description
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. A bug was discovered in the `flatpak-portal` service that can allow sandboxed applications to execute arbitrary code on the host system (a sandbox escape). This sandbox-escape bug is present in versions from 0.11.4 and before fixed versions 1.8.5 and 1.10.0. The Flatpak portal D-Bus service (`flatpak-portal`, also known by its D-Bus service name `org.freedesktop.portal.Flatpak`) allows apps in a Flatpak sandbox to launch their own subprocesses in a new sandbox instance, either with the same security settings as the caller or with more restrictive security settings. For example, this is used in Flatpak-packaged web browsers such as Chromium to launch subprocesses that will process untrusted web content, and give those subprocesses a more restrictive sandbox than the browser itself. In vulnerable versions, the Flatpak portal service passes caller-specified environment variables to non-sandboxed processes on the host system, and in particular to the `flatpak run` command that is used to launch the new sandbox instance. A malicious or compromised Flatpak app could set environment variables that are trusted by the `flatpak run` command, and use them to execute arbitrary code that is not in a sandbox. As a workaround, this vulnerability can be mitigated by preventing the `flatpak-portal` service from starting, but that mitigation will prevent many Flatpak apps from working correctly. This is fixed in versions 1.8.5 and 1.10.0.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
来源: CVE Program / CVE List V5
Vulnerability Title
Flatpak 注入漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Flatpak是一套用于Linux桌面应用计算机环境的应用程序虚拟化系统。 Flatpak 存在注入漏洞，该漏洞源于flatpak-portal允许沙箱应用程序在主机系统上执行任意代码(沙箱逃脱)。
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
flatpak flatpak >= 0.11.4, < 1.8.5 -

二、漏洞 CVE-2021-21261 的公开POC

# POC 描述 源链接 神龙链接
AI 生成 POC 高级

未找到公开 POC。

登录以生成 AI POC

三、漏洞 CVE-2021-21261 的情报信息

请登录查看更多情报信息。

CVE-2021-21261 补丁与修复 (4)

CVE-2021-21261 厂商安全公告 (3)

IV. Related Vulnerabilities

Same product: flatpak
Same vendor: flatpak
Same weakness: CWE-74

V. Comments for CVE-2021-21261

暂无评论

发表评论