CVE-2021-44228-Log4Shell-Hashes
CVE-2021-44228_scanner
CVE-2021-44228-Log4Shell-Hashes | CVE-2021-44228_scanner | |
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11 | 13 | |
153 | 346 | |
- | 0.0% | |
0.0 | 1.8 | |
over 2 years ago | about 2 years ago | |
PowerShell | ||
- | BSD 2-clause "Simplified" License |
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CVE-2021-44228-Log4Shell-Hashes
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Powershell Script to check for Log4j Vulnerability
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 $vulnerablesums = -split $(Invoke-WebRequest https://github.com/mubix/CVE-2021-44228-Log4Shell-Hashes/raw/main/sha256sums.txt -UseBasicParsing).content | ? {$_.length -eq 64} $localsums = $Null $DriveList = (Get-PSDrive -PSProvider FileSystem).Root ForEach($Drive In $DriveList) { $localfile=(get-childitem $Drive log4j*.jar -file -Recurse -erroraction silentlycontinue | Get-ItemProperty).DirectoryName $localsums=(get-childitem $Drive log4j*.jar -file -Recurse -erroraction silentlycontinue | Get-FileHash).hash ($localsums -and (compare-object -ReferenceObject $vulnerablesums -DifferenceObject $localsums -IncludeEqual -ErrorAction SilentlyContinue).SideIndicator -eq "==") Write-Host $localfile }
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How to detect the Log4Shell vulnerability with Powershell
-split (Invoke-WebRequest https://github.com/mubix/CVE-2021-44228-Log4Shell-Hashes/raw/main/sha256sums.txt -UseBasicParsing).content | Where-Object {$_.length -eq 64}
- The Log4j Vulnerability Explained : Detection and Exploitation | TryHackMe Log4j
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Log4j PDQ scan profile
#messy alphabet array [char[]]$driveletters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" #foreach letter of the alphabet foreach($driveletter in $driveletters) { #formats the variable because i'm bad $drive= "$driveletter"+":\" #if the drive letter exists and isn't just assigned to a dvd rive if(test-path $drive){ #creates the path to check for log4j files $log4jpath = "$drive"+"log4j*.jar" ###Get Vulnerable Hashes $vulnerablesums = -split $(Invoke-WebRequest https://github.com/mubix/CVE-2021-44228-Log4Shell-Hashes/raw/main/sha256sums.txt -UseBasicParsing).content | Where-Object {$_.length -eq 64} ###Get Hash and file location for each log4j*.jar file $localsums = get-childitem $log4jpath -file -Recurse | Select-Object Fullname, @{Name = "Hash"; Expression = {(Get-FileHash -Path $_.FullName).Hash}} ###If Log4j*.jar is found compare hash to bad hashes if(-not($null -eq $localsums)){$BadHash = Compare-Object -ReferenceObject $vulnerablesums -DifferenceObject $localsums.Hash -ExcludeDifferent -IncludeEqual -ErrorAction SilentlyContinue} ###Return FileLocation and hash for each vulnerable result foreach($Entry in $localsums){ if($BadHash.InputObject -contains $Entry.Hash){ $Entry } } } }
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Need some help with a log4j scanner
if you want to match for a single word inside the path like the programs folder name use -notmatch. $vulnerablesums = -split $(Invoke-WebRequest https://github.com/mubix/CVE-2021-44228-Log4Shell-Hashes/raw/main/sha256sums.txt -UseBasicParsing).content |Where-Object { $_.length -eq 64 } $localsums = (get-childitem -path "C:\" -file "log4j*.jar" -Recurse |Where-Object {$_.DirectoryName -notmatch "YOUR APPNAME"} | Get-FileHash).hash ($localsums -and (compare-object -ReferenceObject $vulnerablesums -DifferenceObject $localsums -IncludeEqual -ErrorAction SilentlyContinue).SideIndicator -eq "==") `
- finding systems with vulnerable log4j2 binaries
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SCCM scan for Log4J
I think you mean vulnerable, but you can feed the jar file into get-filehash and see if it matches one listed as vulnerable here: https://github.com/mubix/CVE-2021-44228-Log4Shell-Hashes/blob/main/sha256sums.txt
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2021-12-10 - Cool Query Friday - Hunting Apache Log4j CVE-2021-44228 (Log4Shell)
How would i create a query to do a mass hash lookup per the log4j version hashes found here: https://github.com/mubix/CVE-2021-44228-Log4Shell-Hashes
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RCE 0-day exploit found in log4j, a popular Java logging package
For example search for the vulnerable files: https://github.com/mubix/CVE-2021-44228-Log4Shell-Hashes
CVE-2021-44228_scanner
- Bitcoin miner support/suggestions (log4j)
- Log4J Scanner via Ninja
- Log4 detection by enterprise tools
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Log4J Network Scanning/Detection on a 100k+ Node Network
The last scanner type is looking for the classes. Carnegie Mellon’s CERTCC released one that is referenced by CISA: https://github.com/CERTCC/CVE-2021-44228_scanner that look for class names and some fingerprints. Then there is a scanner written in Go that checks for the vulnerable class files and their hashes (inside JARs, WARs,EARs, and zips). https://github.com/hillu/local-log4j-vuln-scanner
- Any free tool to scan for Log4Shell and Log4j vulnerabilities?
- Log4j vulnerability mitigation
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Is Log4J really fixed?
See: https://github.com/CERTCC/CVE-2021-44228_scanner
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Add CERTCC log4j scan to PDQ?
I'd like to use this to this script scan our network for log4j vulnberabilties: https://github.com/CERTCC/CVE-2021-44228_scanner
- Log4J "JndiLookup.class" question
- Is my Powershell Log4J scanner sufficient?
What are some alternatives?
semgrep-rules - Semgrep rules registry
hotpatch-for-apache-log4j2 - An agent to hotpatch the log4j RCE from CVE-2021-44228.
Get-log4j-Windows.ps1 - Identifying all log4j components across all windows servers, entire domain, can be multi domain. CVE-2021-44228
apache-log4j-poc - Apache Log4j 远程代码执行
nuclei - Fast and customizable vulnerability scanner based on simple YAML based DSL.
Apache Log4j 2 - Apache Log4j 2 is a versatile, feature-rich, efficient logging API and backend for Java.
local-log4j-vuln-scanner - Simple local scanner for vulnerable log4j instances
active-scan-plus-plus - ActiveScan++ Burp Suite Plugin
log4shell - Operational information regarding the log4shell vulnerabilities in the Log4j logging library.
apache-log4j-rce-poc
log4shell-detector - Detector for Log4Shell exploitation attempts