Malcolm's upload-processing pipeline (scripts/safe-extract.py) enforces entry-count, nesting-depth, and total-uncompressed-byte limits when extracting container archives (zip/tar/rar/7z via libarchive), but those limits are not applied when the uploaded file is a single-stream compressed format (.gz, .bz2, .xz, .lzma, .lz) that isn't a .tar.*-style archive. Any authenticated user permitted to upload PCAP/log files can upload a small, highly compressible file (e.g. a gzip bomb) that decompresses to an effectively unbounded size on disk, exhausting the shared Docker volume used by OpenSearch, Logstash, Arkime, and Zeek, and disrupting the platform for all users.
Metrics
Affected Vendors & Products
References
History
Tue, 13 Oct 2026 16:30:00 +0000
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Fri, 09 Oct 2026 07:30:00 +0000
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Cisagov
Cisagov malcolm |
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Cisagov
Cisagov malcolm |
Thu, 08 Oct 2026 17:45:00 +0000
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| Description | Malcolm's upload-processing pipeline (scripts/safe-extract.py) enforces entry-count, nesting-depth, and total-uncompressed-byte limits when extracting container archives (zip/tar/rar/7z via libarchive), but those limits are not applied when the uploaded file is a single-stream compressed format (.gz, .bz2, .xz, .lzma, .lz) that isn't a .tar.*-style archive. Any authenticated user permitted to upload PCAP/log files can upload a small, highly compressible file (e.g. a gzip bomb) that decompresses to an effectively unbounded size on disk, exhausting the shared Docker volume used by OpenSearch, Logstash, Arkime, and Zeek, and disrupting the platform for all users. | |
| Title | Improper Handling of Highly Compressed Data in Malcolm | |
| Weaknesses | CWE-409 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: icscert
Published: 2026-10-08T17:30:12.206Z
Updated: 2026-10-14T19:36:54.743Z
Reserved: 2026-10-07T18:31:15.966Z
Link: CVE-2026-107335
No data.
Status : Awaiting Analysis
Published: 2026-10-08T18:17:19.970
Modified: 2026-10-13T17:17:16.610
Link: CVE-2026-107335
No data.
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