CVE-2021-41773 PoC — Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49

Source

https://github.com/wangfly-me/Apache_Penetration_Tool

Associated Vulnerability

Title:Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 (CVE-2021-41773)
Description:A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Server 2.4.50 was found to be incomplete, see CVE-2021-42013.

Description

CVE-2021-41773&CVE-2021-42013图形化漏洞检测利用工具

Readme

# Apache_Penetration_Tool
使用QT C++开发的一款漏洞利用工具。
<br>

# [中文说明](#readme)
# [English description](https://github.com/wangfly-me/Apache_Penetration_Tool/blob/main/README-EN.md)

## 工具界面
在漏洞选择编号处，选择需要检测的漏洞。
![1.png](https://github.com/wangfly-me/Apache_Penetration_Tool/blob/main/images/1.png)

## 漏洞检测
在第一个文本栏中填写目标url或者ip，带上http或者https，结果会在最后一个大的文本框中显示出来。
![2.png](https://github.com/wangfly-me/Apache_Penetration_Tool/blob/main/images/2.png)

## 目录遍历
在第二个文本栏中填写需要被读取的文件绝对路径，结果会在最后一个大的文本框中显示出来。
![3.png](https://github.com/wangfly-me/Apache_Penetration_Tool/blob/main/images/3.png)

## 命令执行
在第三个文本栏中填入需要被执行的命令，结果会在最后一个大的文本框中显示出来。
![4.png](https://github.com/wangfly-me/Apache_Penetration_Tool/blob/main/images/4.png)

## 反弹shell
先使用nc开启监听，然后填入ip和端口，即可完成反弹。
![5.png](https://github.com/wangfly-me/Apache_Penetration_Tool/blob/main/images/5.png)

File Snapshot


 [4.0K]  /data/pocs/c2c809c819f69caaa035eba9c632e7f20e4d8cf0
├── [124K]  Apache_Penetration_Tool.exe
├── [3.5M]  D3Dcompiler_47.dll
├── [4.0K]  iconengines
│   └── [ 42K]  qsvgicon.dll
├── [4.0K]  imageformats
│   ├── [ 33K]  qgif.dll
│   ├── [ 46K]  qicns.dll
│   ├── [ 36K]  qico.dll
│   ├── [242K]  qjpeg.dll
│   ├── [ 26K]  qsvg.dll
│   ├── [ 26K]  qtga.dll
│   ├── [438K]  qtiff.dll
│   ├── [ 25K]  qwbmp.dll
│   └── [438K]  qwebp.dll
├── [4.0K]  images
│   ├── [ 11K]  1.png
│   ├── [ 26K]  2.png
│   ├── [ 25K]  3.png
│   ├── [ 13K]  4.png
│   └── [329K]  5.png
├── [468K]  libcurl.dll
├── [ 22K]  libEGL.dll
├── [118K]  libgcc_s_dw2-1.dll
├── [2.7M]  libGLESV2.dll
├── [1.5M]  libstdc++-6.dll
├── [ 78K]  libwinpthread-1.dll
├── [ 15M]  opengl32sw.dll
├── [4.0K]  platforms
│   └── [1.7M]  qwindows.dll
├── [5.8M]  Qt5Core.dll
├── [5.9M]  Qt5Gui.dll
├── [352K]  Qt5Svg.dll
├── [6.1M]  Qt5Widgets.dll
├── [1.3K]  README-EN.md
├── [1.2K]  README.md
└── [4.0K]  translations
    ├── [161K]  qt_bg.qm
    ├── [175K]  qt_ca.qm
    ├── [171K]  qt_cs.qm
    ├── [166K]  qt_da.qm
    ├── [184K]  qt_de.qm
    ├── [  23]  qt_en.qm
    ├── [161K]  qt_es.qm
    ├── [157K]  qt_fi.qm
    ├── [162K]  qt_fr.qm
    ├── [170K]  qt_gd.qm
    ├── [135K]  qt_he.qm
    ├── [ 89K]  qt_hu.qm
    ├── [157K]  qt_it.qm
    ├── [127K]  qt_ja.qm
    ├── [128K]  qt_ko.qm
    ├── [150K]  qt_lv.qm
    ├── [159K]  qt_pl.qm
    ├── [154K]  qt_ru.qm
    ├── [123K]  qt_sk.qm
    └── [155K]  qt_uk.qm

5 directories, 51 files

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