Learn Ubuntu MATE
  • Home
    • Screen Tearing on Intel Graphics
    • Screen Tearing on AMD Graphics
    • How to install Realtek WiFi Driver >
      • How to install Realtek WiFi Driver (Pt 2)
    • Authentication is Required to Mount
    • Traditional Menu
    • Software >
      • App Grid
      • AppCenter
      • GNOME Software
      • Modern Apps
    • Welcome & Software Boutique
    • Remove Welcome & Software Boutique
    • TeamViewer
    • Simple How to Tips >
      • Change Wallpaper
      • Pin a Program
      • Change Date & Time
      • Enable Screensavers >
        • Cosmos Screensaver
      • Decrese Icon Padding
      • Enable Magnification
      • Fading Windows
      • Replace Clock Indicator
      • Remove Media Players
      • Create a Submenu
      • Remove the Collection Menu
      • Preferred Applications
      • Upgrade LibreOffice
      • Install Fonts >
        • Install New Fonts
      • Play a DVD
      • Enable Livepatch
      • Update Software
      • Unresponsive Program
      • Install HWE >
        • Install HWE 20.04
      • Open HEIC Images
      • Open WebP Images
      • USB Flash Drive
      • No Audio
      • Screen Flickering
      • Screen Blanking
      • Draining Battery
      • Reduce Shutdown Time
      • Create a Mount Point
      • Thunderbird Emoticons
      • Sound Preview
      • Failed To Download >
        • Failed to Download (#2)
      • Enter Password to Unlock
      • Two Wifi Icons
      • System Program Problem
      • CD Burner Issue
      • Firefox Homepage Fix
      • VLC Closes Fix
      • Desktop Error
      • Trash Bin
      • MATE Weather Applet
      • OpenGL: renderer: llvmpipe
      • PolicyKit vulnerability
    • Install Ubuntu MATE >
      • Burn an ISO to DVD
      • Create a Bootable USB
      • Upgrade Ubuntu MATE
  • Ubuntu MATE
    • How to Scan
    • How to Take a Screenshot
    • How to View a PDF File
    • Multiple Workspaces
    • Software Updater
    • Archive Manager
    • How to Burn CD/DVDs
    • Setup & Use Email >
      • Email Filter
    • Firefox Web Browser
    • Shotwell Photo Manager
    • Image Viewer
    • Caja File Manager
    • Trash
    • Play Videos
  • Additional Software
    • Antivirus >
      • BitDefender Antivirus
      • ClamTK Antivirus >
        • Clamscan Antivirus
        • ClamTK Caja Add-on
      • Comodo AntiVirus
    • Archive Managers >
      • Archive Manager
      • Ark
      • B1 Free Archiver
      • P7Zip-Desktop
      • PeaZip
      • Xarchiver
    • Browsers >
      • Brave
      • Chrome
      • Chromium
      • Falkon
      • Firefox
      • GNOME Web
      • Iridium Browser
      • LibreWolf
      • Microsoft Edge
      • Midori
      • Min Browser
      • NAVER Whale
      • Opera
      • Otter
      • Pale Moon
      • SeaMonkey
      • Sidekick
      • Slimjet Browser
      • SRWare Iron
      • Ungoogled Chromium
      • Vivaldi
      • Waterfox
      • Yandex Browser
    • Office Applications >
      • Couturier
      • PDF-Shuffler
      • PDF Studio Viewer
      • Xournal
      • Foxit Reader
      • Okular
      • gLabels >
        • Multiple Name Badges
        • CD & DVD Labels
        • Business Cards
        • Mailing Address Labels
        • Return Address Labels
      • Spice-Up
      • Stickynotes
    • Educational Programs >
      • Galculator
      • GeoGebra Classic
      • GNOME Calculator
      • KCalc
      • NumWorks
      • Pebbles
      • Qalculate!
      • QT-Calculator
      • How To Install R >
        • Install R Commander
        • Install RStudio
      • SpeedCrunch
      • TI-83 Plus
      • TI-84 Plus CE
      • KWordQuiz
      • Granule
    • Graphics >
      • 4K Slideshow Maker
      • Imagination
      • Gnome Screenshot
      • Ksnip
      • Shutter >
        • Shutter 0.94.3
      • PhotoFlare
      • Pinta >
        • Tool Palette >
          • Tool Palette (Cont)
        • File Menu >
          • Screenshot Tool
        • View Menu
        • Edit Menu >
          • Palette
        • Image Menu >
          • Image Size
        • Layers Menu
        • Adjustments Menu
        • Effects Menu >
          • Red Eye Removal
          • Pixelate
        • Add-ins Menu
        • Window Menu
        • Help Menu
        • Restore Layout
        • Pinta 1.7
        • Pinta 2.0.1
      • Bing Wallpapers
      • Variety Wallpaper
      • Converseen
      • Curtail
      • Imagine
      • ​Annotator
      • Aliza MS
      • Brightness Controller
      • Photoprint
      • Peek
    • Image Viewers >
      • Deepin Image Viewer
      • Eye of Gnome
      • Fotoxx
      • Geeqie
      • GPicView
      • gThumb
      • Gwenview
      • Mirage
      • nomacs
      • PhotoQt
      • Phototonic
      • Pix
      • Qimgv
      • qView
      • Ristretto
      • Viewnior 1.6 >
        • Viewnior 1.7
      • XnView MP
      • Xviewer
    • Music Players >
      • Amarok
      • Audacious
      • Clementine
      • DeaDBeeF
      • foobar2000
      • Guayadeque
      • Lollypop
      • Museeks
      • Noise Music Player
      • Pragha
      • Quod Libet
      • Rhythmbox
      • Sayonara
      • Strawberry
      • Violin
    • Networking >
      • Dukto
      • LAN-Share
      • Nitroshare
      • Warpinator
    • Utility Software >
      • BleachBit
      • Stacer
      • Ubuntu Cleaner
      • CPU-G
      • CPU-X
      • Hardinfo
      • I-Nex
      • Caffeine
      • Conky >
        • Widgets & Themes
        • Title Bars
      • deb-get
      • GNOME Split
      • GParted
      • GtkOrphan
      • Ice SSB >
        • MS Office Online
        • Pixlr Editor
        • Photopea
      • KRename
      • KShutdown
      • Magnus
      • Radeon Profile
      • Ubuntu Mainline Kernel Installer
      • Y PPA Manager
    • Sound & Video >
      • Avidemux >
        • Merge Videos
        • Cut Videos
        • Crop Videos
      • Selene
      • Radio Tray >
        • Radio Tray Lite
      • Pithos
      • Spotify
      • Asunder
      • EasyTag
      • SimpleScreenRecorder
      • OBS Studio
      • FF Multi Converter
      • FFmpeg
      • SoundConverter
      • MediaInfo
      • Bomi
      • Gnome MPV
      • MPlayer
      • SMPlayer
      • VLC Media Player
      • HandBrake >
        • Convert A Video
    • Entertainment >
      • Hypnotix
      • IPTVnator
      • Airy TV
      • Crackle
      • Plex Live TV
      • Pluto TV
      • Popcornflix
      • Stirr TV
      • Tubi TV
      • Xumo TV
      • YouTube Movies
      • Plex Media Server
      • Emby Media Server
    • Themes & Colors >
      • Themes
      • Installing Themes
      • Customize Themes #1
      • Customize Themes #2
      • Change App Icons
    • USB Image Writer Tools >
      • GNOME MultiWriter
      • Popsicle
  • Reviews
    • YouTube Reviews >
      • Ubuntu MATE 16.10
      • Ubuntu Mate 17.04
      • Ubuntu MATE 17.10
      • Ubuntu MATE 18.04
      • Ubuntu MATE 20.04
      • Ubuntu MATE 22.04
  • Info
    • How Safe are Your Paasswords >
      • Cyber Security Leaks
      • Hotmail Leak
      • YaHoo Leak
      • Windstream Hacked
    • Windows 7
    • Wireless USB Adapters
  • About
    • In Memory of ...

How-To Fix the PolicyKit & Dirty Pipe Vulnerabilities

"It was discovered that the PolicyKit pkexec tool incorrectly handled command-line arguments. A local attacker could use this issue to escalate privileges to an administrator. policykit-1 could be made to run programs as an administrator." -- Ubuntu Security
PolicyKit is a toolkit for defining and handling the policy that allows unprivileged processes to speak to privileged processes.
Picture
CyberArk Labs created a tool called PwnKit-Hunter that will check your Linux system to see if you are vulnerable to PwnKit.

How to run “PwnKit-Hunter”

Open your Terminal and enter the following: (Look at the image above.)

git clone https://github.com/cyberark/PwnKit-Hunter.git

cd PwnKit-Hunter

./CVE-2021-4034_Finder.py
​
You may have to locate the file CVE-2021-4034_Finder.py and right-click it and select the Permissions tab and place a check next to "Allow executing file as program" before you run the the third step or command. The file was located in my path "/home/tommy/PwnKit-Hunter." You'll replace my name with the name of the account you are logged in with on your system. 
Picture
As you can see in the image below, my polkit package is not vulnerable.
Picture
If your system is vulnerable then go to one of the following links below and download and install the appropriate update for your system:
  • Package "policykit-1"
  • USN-5252-1: PolicyKit vulnerability
  • policykit-1_0.105-26ubuntu1.3_amd64
  • policykit-1 0.105-26ubuntu1.3 source package in Ubuntu
  • Index of /ubuntu/pool/main/p/policykit-1
​
Ubuntu Security Notice USN-5304-1

​Dirty Pipe Privilege Escalation Vulnerability in Linux

​There's a vulnerability in Linux kernel versions 5.8 and later known as “Dirty Pipe.” A local attacker could exploit this vulnerability to take control of an affected system. Users are recommended to upgrade their kernel to 5.10.102 or newer.
Picture

​


​

Mar. 11, 2022
Powered by Create your own unique website with customizable templates.
  • Home
    • Screen Tearing on Intel Graphics
    • Screen Tearing on AMD Graphics
    • How to install Realtek WiFi Driver >
      • How to install Realtek WiFi Driver (Pt 2)
    • Authentication is Required to Mount
    • Traditional Menu
    • Software >
      • App Grid
      • AppCenter
      • GNOME Software
      • Modern Apps
    • Welcome & Software Boutique
    • Remove Welcome & Software Boutique
    • TeamViewer
    • Simple How to Tips >
      • Change Wallpaper
      • Pin a Program
      • Change Date & Time
      • Enable Screensavers >
        • Cosmos Screensaver
      • Decrese Icon Padding
      • Enable Magnification
      • Fading Windows
      • Replace Clock Indicator
      • Remove Media Players
      • Create a Submenu
      • Remove the Collection Menu
      • Preferred Applications
      • Upgrade LibreOffice
      • Install Fonts >
        • Install New Fonts
      • Play a DVD
      • Enable Livepatch
      • Update Software
      • Unresponsive Program
      • Install HWE >
        • Install HWE 20.04
      • Open HEIC Images
      • Open WebP Images
      • USB Flash Drive
      • No Audio
      • Screen Flickering
      • Screen Blanking
      • Draining Battery
      • Reduce Shutdown Time
      • Create a Mount Point
      • Thunderbird Emoticons
      • Sound Preview
      • Failed To Download >
        • Failed to Download (#2)
      • Enter Password to Unlock
      • Two Wifi Icons
      • System Program Problem
      • CD Burner Issue
      • Firefox Homepage Fix
      • VLC Closes Fix
      • Desktop Error
      • Trash Bin
      • MATE Weather Applet
      • OpenGL: renderer: llvmpipe
      • PolicyKit vulnerability
    • Install Ubuntu MATE >
      • Burn an ISO to DVD
      • Create a Bootable USB
      • Upgrade Ubuntu MATE
  • Ubuntu MATE
    • How to Scan
    • How to Take a Screenshot
    • How to View a PDF File
    • Multiple Workspaces
    • Software Updater
    • Archive Manager
    • How to Burn CD/DVDs
    • Setup & Use Email >
      • Email Filter
    • Firefox Web Browser
    • Shotwell Photo Manager
    • Image Viewer
    • Caja File Manager
    • Trash
    • Play Videos
  • Additional Software
    • Antivirus >
      • BitDefender Antivirus
      • ClamTK Antivirus >
        • Clamscan Antivirus
        • ClamTK Caja Add-on
      • Comodo AntiVirus
    • Archive Managers >
      • Archive Manager
      • Ark
      • B1 Free Archiver
      • P7Zip-Desktop
      • PeaZip
      • Xarchiver
    • Browsers >
      • Brave
      • Chrome
      • Chromium
      • Falkon
      • Firefox
      • GNOME Web
      • Iridium Browser
      • LibreWolf
      • Microsoft Edge
      • Midori
      • Min Browser
      • NAVER Whale
      • Opera
      • Otter
      • Pale Moon
      • SeaMonkey
      • Sidekick
      • Slimjet Browser
      • SRWare Iron
      • Ungoogled Chromium
      • Vivaldi
      • Waterfox
      • Yandex Browser
    • Office Applications >
      • Couturier
      • PDF-Shuffler
      • PDF Studio Viewer
      • Xournal
      • Foxit Reader
      • Okular
      • gLabels >
        • Multiple Name Badges
        • CD & DVD Labels
        • Business Cards
        • Mailing Address Labels
        • Return Address Labels
      • Spice-Up
      • Stickynotes
    • Educational Programs >
      • Galculator
      • GeoGebra Classic
      • GNOME Calculator
      • KCalc
      • NumWorks
      • Pebbles
      • Qalculate!
      • QT-Calculator
      • How To Install R >
        • Install R Commander
        • Install RStudio
      • SpeedCrunch
      • TI-83 Plus
      • TI-84 Plus CE
      • KWordQuiz
      • Granule
    • Graphics >
      • 4K Slideshow Maker
      • Imagination
      • Gnome Screenshot
      • Ksnip
      • Shutter >
        • Shutter 0.94.3
      • PhotoFlare
      • Pinta >
        • Tool Palette >
          • Tool Palette (Cont)
        • File Menu >
          • Screenshot Tool
        • View Menu
        • Edit Menu >
          • Palette
        • Image Menu >
          • Image Size
        • Layers Menu
        • Adjustments Menu
        • Effects Menu >
          • Red Eye Removal
          • Pixelate
        • Add-ins Menu
        • Window Menu
        • Help Menu
        • Restore Layout
        • Pinta 1.7
        • Pinta 2.0.1
      • Bing Wallpapers
      • Variety Wallpaper
      • Converseen
      • Curtail
      • Imagine
      • ​Annotator
      • Aliza MS
      • Brightness Controller
      • Photoprint
      • Peek
    • Image Viewers >
      • Deepin Image Viewer
      • Eye of Gnome
      • Fotoxx
      • Geeqie
      • GPicView
      • gThumb
      • Gwenview
      • Mirage
      • nomacs
      • PhotoQt
      • Phototonic
      • Pix
      • Qimgv
      • qView
      • Ristretto
      • Viewnior 1.6 >
        • Viewnior 1.7
      • XnView MP
      • Xviewer
    • Music Players >
      • Amarok
      • Audacious
      • Clementine
      • DeaDBeeF
      • foobar2000
      • Guayadeque
      • Lollypop
      • Museeks
      • Noise Music Player
      • Pragha
      • Quod Libet
      • Rhythmbox
      • Sayonara
      • Strawberry
      • Violin
    • Networking >
      • Dukto
      • LAN-Share
      • Nitroshare
      • Warpinator
    • Utility Software >
      • BleachBit
      • Stacer
      • Ubuntu Cleaner
      • CPU-G
      • CPU-X
      • Hardinfo
      • I-Nex
      • Caffeine
      • Conky >
        • Widgets & Themes
        • Title Bars
      • deb-get
      • GNOME Split
      • GParted
      • GtkOrphan
      • Ice SSB >
        • MS Office Online
        • Pixlr Editor
        • Photopea
      • KRename
      • KShutdown
      • Magnus
      • Radeon Profile
      • Ubuntu Mainline Kernel Installer
      • Y PPA Manager
    • Sound & Video >
      • Avidemux >
        • Merge Videos
        • Cut Videos
        • Crop Videos
      • Selene
      • Radio Tray >
        • Radio Tray Lite
      • Pithos
      • Spotify
      • Asunder
      • EasyTag
      • SimpleScreenRecorder
      • OBS Studio
      • FF Multi Converter
      • FFmpeg
      • SoundConverter
      • MediaInfo
      • Bomi
      • Gnome MPV
      • MPlayer
      • SMPlayer
      • VLC Media Player
      • HandBrake >
        • Convert A Video
    • Entertainment >
      • Hypnotix
      • IPTVnator
      • Airy TV
      • Crackle
      • Plex Live TV
      • Pluto TV
      • Popcornflix
      • Stirr TV
      • Tubi TV
      • Xumo TV
      • YouTube Movies
      • Plex Media Server
      • Emby Media Server
    • Themes & Colors >
      • Themes
      • Installing Themes
      • Customize Themes #1
      • Customize Themes #2
      • Change App Icons
    • USB Image Writer Tools >
      • GNOME MultiWriter
      • Popsicle
  • Reviews
    • YouTube Reviews >
      • Ubuntu MATE 16.10
      • Ubuntu Mate 17.04
      • Ubuntu MATE 17.10
      • Ubuntu MATE 18.04
      • Ubuntu MATE 20.04
      • Ubuntu MATE 22.04
  • Info
    • How Safe are Your Paasswords >
      • Cyber Security Leaks
      • Hotmail Leak
      • YaHoo Leak
      • Windstream Hacked
    • Windows 7
    • Wireless USB Adapters
  • About
    • In Memory of ...