sevenz-rust2: unchecked 7z entry paths permit traversal and absolute-path file overwrites
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| hasenbanck | sevenz-rust2 | affected |
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No data.
| Vendor | Product | Versions | ||||||||
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| Hasenbanck | Sevenz-rust2 |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.138% probability within 30 days)
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| First Time appeared |
Hasenbanck
Hasenbanck sevenz-rust2 |
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| Vendors & Products |
Hasenbanck
Hasenbanck sevenz-rust2 |
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| Metrics |
ssvc
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| Description | sevenz-rust2 is a Rust-native 7z compressor and `decompress`or. Prior to 0.21.1, extracting an attacker-supplied 7z archive can write or overwrite files outside the destination directory. In `src/util/decompress.rs`, `decompress_impl` computes each destination with `dest.join(entry.name())` without normalizing the archive's UTF-16 entry name or verifying containment, and `default_entry_extract_fn` writes to it with `File::create`. Parent-directory components escape the extraction root, and an absolute entry path makes the join discard the destination entirely. The convenience entry points `decompress`, `decompress_file`, `decompress_with_password`, and `decompress_file_with_password` all use this default path. Overwriting writable configuration, startup, cron, or build files can lead to code execution or persistence. The archive bytes are the attacker-controlled trust boundary, including for applications that automatically unpack uploaded or otherwise untrusted archives. This issue is fixed in version 0.21.1. | |
| Title | sevenz-rust2: unchecked 7z entry paths permit traversal and absolute-path file overwrites | |
| Weaknesses | CWE-22 CWE-23 |
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| References |
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| Metrics |
cvssV3_1
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