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[SECURITY] Fix Zip Slip Vulnerability #1

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[SECURITY] Fix Zip Slip Vulnerability #1

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5 changes: 4 additions & 1 deletion compress-example/src/main/java/io/github/biezhi/compress/jar/JAR.java
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,9 @@ public static void decompress(String in, File destination) throws IOException {
continue;
}
File curfile = new File(destination, entry.getName());
if (!curfile.toPath().normalize().startsWith(destination.toPath().normalize())) {
throw new IOException("Bad zip entry");
}
File parent = curfile.getParentFile();
if (!parent.exists()) {
if (!parent.mkdirs()) {
Expand Down Expand Up @@ -66,4 +69,4 @@ private static void addToArchiveCompression(JarArchiveOutputStream out, File fil
System.out.println(file.getName() + " is not supported");
}
}
}
}
3 changes: 3 additions & 0 deletions compress-example/src/main/java/io/github/biezhi/compress/zip/ZIP.java
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,9 @@ public static void decompress(String in, File destination) throws IOException {
continue;
}
File curfile = new File(destination, entry.getName());
if (!curfile.toPath().normalize().startsWith(destination.toPath().normalize())) {
throw new IOException("Bad zip entry");
}
File parent = curfile.getParentFile();
if (!parent.exists()) {
if (!parent.mkdirs()) {
Expand Down