Asymmetric Resource Consumption (Zip Bomb) The advisory has been revoked - it doesn't affect any version of package python/cpython (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-PYTHONCPYTHON-6468186
- published20 Mar 2024
- disclosed19 Mar 2024
- creditdyingc
Introduced: 19 Mar 2024
CVE-2024-0450 (opens in a new tab)How to fix?
Upgrade python/cpython to version 3.8.19, 3.9.19, 3.10.14, 3.11.9, 3.12.3 or higher.
Amendment
This was deemed not a vulnerability.
Overview
Affected versions of this package are vulnerable to Asymmetric Resource Consumption (Zip Bomb) in the zipfile module. An attacker can create a zip-bomb with a high compression ratio that exploits the zip format to overlap entries in the archive.
Workaround
Thee following check can be used before extracting a ZIP file.
# zipf is an open ZipFile
end_offset = zipf.start_dir
for zinfo in sorted(zipf.filelist,
key=lambda zinfo: zinfo.header_offset,
reverse=True):
if zinfo.header_offset + zinfo.compress_size > end_offset:
raise zipfile.BadZipFile('Overlapped entries')
end_offset = zinfo.header_offset
Note:
This is a duplicate of https://security.snyk.io/vuln/SNYK-UNMANAGED-PYTHON-7924823