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author | Dominik Stadler <centic@apache.org> | 2023-08-10 06:14:44 +0000 |
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committer | Dominik Stadler <centic@apache.org> | 2023-08-10 06:14:44 +0000 |
commit | 80264d564868ccb11b7264be7befa546f6d55780 (patch) | |
tree | a20af0fd5320008ac49c29214475b8691c32d216 /poi-scratchpad/src/main | |
parent | 316738c9d042980ba450d2b4234682bfc723cd53 (diff) | |
download | poi-80264d564868ccb11b7264be7befa546f6d55780.tar.gz poi-80264d564868ccb11b7264be7befa546f6d55780.zip |
Bug 66425: Avoid a ClassCastException found via oss-fuzz
We try to avoid throwing ClassCastException, but it was possible
to trigger one here with a specially crafted input-file
Should fix https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=61330
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1911586 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'poi-scratchpad/src/main')
-rw-r--r-- | poi-scratchpad/src/main/java/org/apache/poi/hsmf/datatypes/AttachmentChunks.java | 52 |
1 files changed, 29 insertions, 23 deletions
diff --git a/poi-scratchpad/src/main/java/org/apache/poi/hsmf/datatypes/AttachmentChunks.java b/poi-scratchpad/src/main/java/org/apache/poi/hsmf/datatypes/AttachmentChunks.java index 83e5159813..a171fede40 100644 --- a/poi-scratchpad/src/main/java/org/apache/poi/hsmf/datatypes/AttachmentChunks.java +++ b/poi-scratchpad/src/main/java/org/apache/poi/hsmf/datatypes/AttachmentChunks.java @@ -181,32 +181,38 @@ public class AttachmentChunks implements ChunkGroup { // - ATTACH_LONG_PATHNAME // - ATTACH_SIZE final int chunkId = chunk.getChunkId(); - if (chunkId == ATTACH_DATA.id) { - if (chunk instanceof ByteChunk) { - attachData = (ByteChunk) chunk; - } else if (chunk instanceof DirectoryChunk) { - attachmentDirectory = (DirectoryChunk) chunk; + + try { + if (chunkId == ATTACH_DATA.id) { + if (chunk instanceof ByteChunk) { + attachData = (ByteChunk) chunk; + } else if (chunk instanceof DirectoryChunk) { + attachmentDirectory = (DirectoryChunk) chunk; + } else { + LOG.atError().log("Unexpected data chunk of type {}", chunk.getEntryName()); + } + } else if (chunkId == ATTACH_EXTENSION.id) { + attachExtension = (StringChunk) chunk; + } else if (chunkId == ATTACH_FILENAME.id) { + attachFileName = (StringChunk) chunk; + } else if (chunkId == ATTACH_LONG_FILENAME.id) { + attachLongFileName = (StringChunk) chunk; + } else if (chunkId == ATTACH_MIME_TAG.id) { + attachMimeTag = (StringChunk) chunk; + } else if (chunkId == ATTACH_RENDERING.id) { + attachRenderingWMF = (ByteChunk) chunk; + } else if (chunkId == ATTACH_CONTENT_ID.id) { + attachContentId = (StringChunk) chunk; } else { - LOG.atError().log("Unexpected data chunk of type {}", chunk.getEntryName()); + LOG.atWarn().log("Currently unsupported attachment chunk property will be ignored. {}", chunk.getEntryName()); } - } else if (chunkId == ATTACH_EXTENSION.id) { - attachExtension = (StringChunk) chunk; - } else if (chunkId == ATTACH_FILENAME.id) { - attachFileName = (StringChunk) chunk; - } else if (chunkId == ATTACH_LONG_FILENAME.id) { - attachLongFileName = (StringChunk) chunk; - } else if (chunkId == ATTACH_MIME_TAG.id) { - attachMimeTag = (StringChunk) chunk; - } else if (chunkId == ATTACH_RENDERING.id) { - attachRenderingWMF = (ByteChunk) chunk; - } else if (chunkId == ATTACH_CONTENT_ID.id) { - attachContentId = (StringChunk) chunk; - } else { - LOG.atWarn().log("Currently unsupported attachment chunk property will be ignored. {}", chunk.getEntryName()); - } - // And add to the main list - allChunks.add(chunk); + // And add to the main list + allChunks.add(chunk); + } catch (ClassCastException e) { + throw new IllegalArgumentException("ChunkId and type of chunk did not match, had id " + + chunkId + " and type of chunk: " + chunk.getClass(), e); + } } /** |