Vulnerabilities

1 via 2 paths

Dependencies

19

Source

GitHub

Commit

d2e7a24e

Find, fix and prevent vulnerabilities in your code.

Severity
  • 1
Status
  • 1
  • 0
  • 0

low severity

Information Exposure

  • Vulnerable module: org.jetbrains.kotlin:kotlin-stdlib
  • Introduced through: org.jetbrains.kotlinx:kotlinx-coroutines-android@1.8.1

Detailed paths

  • Introduced through: TiagoMSSantos/MobileRT@TiagoMSSantos/MobileRT#d2e7a24e8df28ef0f916588520b1df3c7d2527bc org.jetbrains.kotlinx:kotlinx-coroutines-android@1.8.1 org.jetbrains.kotlin:kotlin-stdlib@1.9.21
  • Introduced through: TiagoMSSantos/MobileRT@TiagoMSSantos/MobileRT#d2e7a24e8df28ef0f916588520b1df3c7d2527bc org.jetbrains.kotlinx:kotlinx-coroutines-android@1.8.1 org.jetbrains.kotlinx:kotlinx-coroutines-core-jvm@1.8.1 org.jetbrains.kotlin:kotlin-stdlib@1.9.21

Overview

org.jetbrains.kotlin:kotlin-stdlib is a Kotlin Standard Library for JVM.

Affected versions of this package are vulnerable to Information Exposure. A Kotlin application using createTempDir or createTempFile and placing sensitive information within either of these locations would be leaking this information in a read-only way to other users also on this system.

Note: As of version 1.4.21, the vulnerable functions have been marked as deprecated. Due to still being usable, this advisory is kept as "unfixed".

PoC by JLLeitschuh

package org.jlleitschuh.sandbox

import org.junit.jupiter.api.Test
import java.io.BufferedReader
import java.io.File
import java.io.IOException
import java.io.InputStreamReader
import java.nio.file.Files

class KotlinTempDirectoryPermissionCheck {
    @Test
    fun `kotlin check default directory permissions`() {
        val dir = createTempDir()
        runLS(dir.parentFile, dir) // Prints drwxr-xr-x
    }

    @Test
    fun `Files check default directory permissions`() {
        val dir = Files.createTempDirectory("random-directory")
        runLS(dir.toFile().parentFile, dir.toFile()) // Prints drwx------
    }

    @Test
    fun `kotlin check default file permissions`() {
        val file = createTempFile()
        runLS(file.parentFile, file) // Prints -rw-r--r--
    }

    @Test
    fun `Files check default file permissions`() {
        val file = Files.createTempFile("random-file", ".txt")
        runLS(file.toFile().parentFile, file.toFile()) // Prints -rw-------
    }

    private fun runLS(file: File, lookingFor: File) {
        val processBuilder = ProcessBuilder()
        processBuilder.command("ls", "-l", file.absolutePath)
        try {
            val process = processBuilder.start()
            val output = StringBuilder()
            val reader = BufferedReader(
                InputStreamReader(process.inputStream)
            )
            reader.lines().forEach { line ->
                if (line.contains("total")) {
                    output.append(line).append('\n')
                }
                if (line.contains(lookingFor.name)) {
                    output.append(line).append('\n')
                }
            }
            val exitVal = process.waitFor()
            if (exitVal == 0) {
                println("Success!")
                println(output)
            } else {
                //abnormal...
            }
        } catch (e: IOException) {
            e.printStackTrace()
        } catch (e: InterruptedException) {
            e.printStackTrace()
        }
    }
}

Remediation

There is no fixed version for org.jetbrains.kotlin:kotlin-stdlib.

References