| शीर्षक | antlr ANTLR4 4.13.2 Path Traversal tokenVocab File Read |
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| विवरण | The `tokenVocab` grammar option in ANTLR4 specifies a `.tokens` vocabulary file to import. The option value is used directly to construct a file path as `lib_directory + "/" + vocabName + ".tokens"` without any path traversal validation. An attacker-controlled grammar file (or library directory path) can read arbitrary `.tokens` files from anywhere on the filesystem, with the file content appearing verbatim in error messages. Confirmed: ANTLR4 4.13.2 reads and reports the content of `/tmp/secret_tokens.tokens` when `tokenVocab=secret_tokens` and `-lib /tmp` are specified. |
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| स्रोत | ⚠️ https://github.com/wooyun123/wooyun/issues/8 |
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| उपयोगकर्ता | jiazhou (UID 89028) |
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| सबमिशन | 27/05/2026 12:14 PM (5 महीनों पहले) |
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| संयम | 27/06/2026 08:28 PM (1 month later) |
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| स्थिति | स्वीकृत |
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| VulDB प्रविष्टि | 374497 [antlr ANTLR4 तक 4.13.2 tokenVocab Grammar Option TokenVocabParser.java getImportedVocabFile निर्देशिका ट्रैवर्सल] |
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| अंक | 20 |
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