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https://issues.apache.org/jira/browse/COMPRESS-647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17785182#comment-17785182
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Robin Schimpf commented on COMPRESS-647:
----------------------------------------
Thanks for fixing it!
> ArrayIndexOutOfBoundsException when reading Zip with data descriptor entries
> ----------------------------------------------------------------------------
>
> Key: COMPRESS-647
> URL: https://issues.apache.org/jira/browse/COMPRESS-647
> Project: Commons Compress
> Issue Type: Bug
> Affects Versions: 1.23.0
> Reporter: Robin Schimpf
> Priority: Major
> Fix For: 1.25.0
>
> Attachments:
> crash-commons-compress-ZipArchiveInputStream-dataDescriptor
>
>
> The attached fuzzed zip file fails to open with the following test when the
> {{allowStoredEntriesWithDataDescriptor}} value is {{true}}.
> {code:java}
> @ParameterizedTest
> @ValueSource(booleans = {true, false})
> public void zipInputStream(final boolean
> allowStoredEntriesWithDataDescriptor) {
> try (ZipArchiveInputStream zIn = new
> ZipArchiveInputStream(Files.newInputStream(Paths.get("crash-commons-compress-ZipArchiveInputStream-dataDescriptor")),
> "UTF-8", false, allowStoredEntriesWithDataDescriptor)) {
> ZipArchiveEntry zae = zIn.getNextZipEntry();
> while (zae != null) {
> zae = zIn.getNextZipEntry();
> }
> } catch (IOException e) {
> // Ignore expected exception
> }
> } {code}
> The exception is
> {code:java}
> java.lang.ArrayIndexOutOfBoundsException: arraycopy: source index -6 out of
> bounds for byte[512] at java.base/java.lang.System.arraycopy(Native Method)
> at
> java.base/java.io.PushbackInputStream.unread(PushbackInputStream.java:232)
> at
> org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.pushback(ZipArchiveInputStream.java:979)
> at
> org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.bufferContainsSignature(ZipArchiveInputStream.java:471)
> at
> org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.readStoredEntry(ZipArchiveInputStream.java:1282)
> at
> org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.readStored(ZipArchiveInputStream.java:1211)
> at
> org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.read(ZipArchiveInputStream.java:1013)
> at
> org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.skip(ZipArchiveInputStream.java:1343)
> at
> org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.closeEntry(ZipArchiveInputStream.java:562)
> at
> org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.getNextZipEntry(ZipArchiveInputStream.java:735)
> at
> org.apache.commons.compress.archivers.zip.ZipArchiveInputStreamTest.zipInputStream(ZipArchiveInputStreamTest.java:765)
> {code}
> I also tried to open the file with the ZipFile class and the crash does not
> occure there. Seems to only affect the stream implementation with that
> specific option.
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