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CVE-2021-29472— composer 参数注入漏洞

一分钟漏洞结论

影响对象
composer composer
利用判断
利用概率较高，应尽快评估
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。

composer是 开源的一个应用软件。提供一个声明，管理和安装PHP项目的依赖项。 Composer 存在参数注入漏洞，该漏洞源于composer.json和包源代码下载url没有被正确地清除。

CVSS 8.8 · High EPSS 4.75% · P92
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一、 漏洞 CVE-2021-29472 基础信息

漏洞信息
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Vulnerability Title
Missing argument delimiter can lead to code execution via VCS repository URLs or source download URLs on systems with Mercurial in composer
来源: CVE Program / CVE List V5
Vulnerability Description
Composer is a dependency manager for PHP. URLs for Mercurial repositories in the root composer.json and package source download URLs are not sanitized correctly. Specifically crafted URL values allow code to be executed in the HgDriver if hg/Mercurial is installed on the system. The impact to Composer users directly is limited as the composer.json file is typically under their own control and source download URLs can only be supplied by third party Composer repositories they explicitly trust to download and execute source code from, e.g. Composer plugins. The main impact is to services passing user input to Composer, including Packagist.org and Private Packagist. This allowed users to trigger remote code execution. The vulnerability has been patched on Packagist.org and Private Packagist within 12h of receiving the initial vulnerability report and based on a review of logs, to the best of our knowledge, was not abused by anyone. Other services/tools using VcsRepository/VcsDriver or derivatives may also be vulnerable and should upgrade their composer/composer dependency immediately. Versions 1.10.22 and 2.0.13 include patches for this issue.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
来源: CVE Program / CVE List V5
Vulnerability Title
composer 参数注入漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
composer是 开源的一个应用软件。提供一个声明，管理和安装PHP项目的依赖项。 Composer 存在参数注入漏洞，该漏洞源于composer.json和包源代码下载url没有被正确地清除。
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
composer composer < 1.10.22 -

二、漏洞 CVE-2021-29472 的公开POC

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三、漏洞 CVE-2021-29472 的情报信息

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CVE-2021-29472 厂商安全公告 (2)

CVE-2021-29472 邮件列表归档 (3)

CVE-2021-29472 安全博客文章 (1)

CVE-2021-29472 其他参考 (1)

IV. Related Vulnerabilities

Same product: composer
Same vendor: composer
Same weakness: CWE-88

V. Comments for CVE-2021-29472

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