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[SECURITY] Fix Zip Slip Vulnerability #424

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[SECURITY] Fix Zip Slip Vulnerability #424

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6 changes: 5 additions & 1 deletion ...management-impl/src/main/java/io/cloudslang/dependency/impl/services/utils/UnzipUtil.java
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,11 @@ public static void unzipToFolder(String folderPath, InputStream source) {
if(ze.isDirectory()) {
new File(mavenHome, ze.getName()).mkdirs();
} else {
try (FileOutputStream fos = new FileOutputStream(new File(mavenHome, ze.getName()))) {
final File zipEntryFile = new File(mavenHome, ze.getName());
if (!zipEntryFile.toPath().normalize().startsWith(mavenHome.toPath().normalize())) {
throw new IOException("Bad zip entry");
}
try (FileOutputStream fos = new FileOutputStream(zipEntryFile)) {
int len;
while ((len = zio.read(buffer)) > 0)
{
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