Vulnerability Description
snappy-java is a fast compressor/decompressor for Java. Due to use of an unchecked chunk length, an unrecoverable fatal error can occur in versions prior to 1.1.10.1. The code in the function hasNextChunk in the fileSnappyInputStream.java checks if a given stream has more chunks to read. It does that by attempting to read 4 bytes. If it wasn’t possible to read the 4 bytes, the function returns false. Otherwise, if 4 bytes were available, the code treats them as the length of the next chunk. In the case that the `compressed` variable is null, a byte array is allocated with the size given by the input data. Since the code doesn’t test the legality of the `chunkSize` variable, it is possible to pass a negative number (such as 0xFFFFFFFF which is -1), which will cause the code to raise a `java.lang.NegativeArraySizeException` exception. A worse case would happen when passing a huge positive value (such as 0x7FFFFFFF), which would raise the fatal `java.lang.OutOfMemoryError` error. Version 1.1.10.1 contains a patch for this issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xerial | Snappy-Java | < 1.1.10.1 |
Related Weaknesses (CWE)
References
- https://github.com/xerial/snappy-java/blob/05c39b2ca9b5b7b39611529cc302d3d796329Issue Tracking
- https://github.com/xerial/snappy-java/blob/master/src/main/java/org/xerial/snappIssue Tracking
- https://github.com/xerial/snappy-java/commit/3bf67857fcf70d9eea56eed4af7c925671ePatch
- https://github.com/xerial/snappy-java/security/advisories/GHSA-qcwq-55hx-v3vhExploitVendor Advisory
- https://security.netapp.com/advisory/ntap-20230818-0009/Third Party Advisory
- https://github.com/xerial/snappy-java/blob/05c39b2ca9b5b7b39611529cc302d3d796329Issue Tracking
- https://github.com/xerial/snappy-java/blob/master/src/main/java/org/xerial/snappIssue Tracking
- https://github.com/xerial/snappy-java/commit/3bf67857fcf70d9eea56eed4af7c925671ePatch
- https://github.com/xerial/snappy-java/security/advisories/GHSA-qcwq-55hx-v3vhExploitVendor Advisory
- https://security.netapp.com/advisory/ntap-20230818-0009/Third Party Advisory
FAQ
What is CVE-2023-34455?
CVE-2023-34455 is a vulnerability with a CVSS score of 7.5 (HIGH). snappy-java is a fast compressor/decompressor for Java. Due to use of an unchecked chunk length, an unrecoverable fatal error can occur in versions prior to 1.1.10.1. The code in the function hasNext...
How severe is CVE-2023-34455?
CVE-2023-34455 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-34455?
Check the references section above for vendor advisories and patch information. Affected products include: Xerial Snappy-Java.