AIKIDO-2025-10875
SharpCompress is vulnerable to Denial of Service (DoS)
21
Low Risk
This Affects:
SharpCompressTL;DR
Affected versions of this package are vulnerable to denial-of-service (DoS) because malformed TAR headers in compressed files can be misinterpreted as LongName/LongLink entries with multi-gigabyte sizes, causing excessive memory allocation. The fix adds a 32KB MAX_LONG_NAME_SIZE limit and validates sizes before allocation, rejecting invalid headers with an InvalidFormatException. A regression test ensures that oversized (e.g., 8GB) fake headers now fail safely instead of exhausting memory.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
SharpCompress is vulnerable to Denial of Service (DoS) in versions 0.1.0 - 0.41.0.
How to fix this
Upgrade the SharpCompress library to the patch version.
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SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
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