From: Dominik Stadler <centic@apache.org>
Date: Sat, 22 Jan 2022 06:58:39 +0000 (+0000)
Subject: Avoid stackoverflow exception that can be caused by a corrupted slideshow file
X-Git-Tag: REL_5_2_1~179
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=8f1c84c3faaf31f158fb0b5331840d7ea46dda97;p=poi.git

Avoid stackoverflow exception that can be caused by a corrupted slideshow file

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1897318 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/poi/src/main/java/org/apache/poi/ddf/AbstractEscherOptRecord.java b/poi/src/main/java/org/apache/poi/ddf/AbstractEscherOptRecord.java
index 1fdf63380e..536e590a2d 100644
--- a/poi/src/main/java/org/apache/poi/ddf/AbstractEscherOptRecord.java
+++ b/poi/src/main/java/org/apache/poi/ddf/AbstractEscherOptRecord.java
@@ -55,6 +55,9 @@ public abstract class AbstractEscherOptRecord extends EscherRecord {
             EscherRecordFactory recordFactory )
     {
         int bytesRemaining = readHeader( data, offset );
+        if (bytesRemaining < 0) {
+            throw new IllegalStateException("Invalid value for bytesRemaining: " + bytesRemaining);
+        }
         short propertiesCount = readInstance( data, offset );
         int pos = offset + 8;