GHSA-7j7m-v7m3-jqm7

Suggest an improvement
Source
https://github.com/advisories/GHSA-7j7m-v7m3-jqm7
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/02/GHSA-7j7m-v7m3-jqm7/GHSA-7j7m-v7m3-jqm7.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-7j7m-v7m3-jqm7
Aliases
Published
2024-02-16T16:07:13Z
Modified
2024-04-16T14:26:54.985176Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Scrapy decompression bomb vulnerability
Details

Impact

Scrapy limits allowed response sizes by default through the DOWNLOAD_MAXSIZE and DOWNLOAD_WARNSIZE settings.

However, those limits were only being enforced during the download of the raw, usually-compressed response bodies, and not during decompression, making Scrapy vulnerable to decompression bombs.

A malicious website being scraped could send a small response that, on decompression, could exhaust the memory available to the Scrapy process, potentially affecting any other process sharing that memory, and affecting disk usage in case of uncompressed response caching.

Patches

Upgrade to Scrapy 2.11.1.

If you are using Scrapy 1.8 or a lower version, and upgrading to Scrapy 2.11.1 is not an option, you may upgrade to Scrapy 1.8.4 instead.

Workarounds

There is no easy workaround.

Disabling HTTP decompression altogether is impractical, as HTTP compression is a rather common practice.

However, it is technically possible to manually backport the 2.11.1 or 1.8.4 fix, replacing the corresponding components of an unpatched version of Scrapy with patched versions copied into your own code.

Acknowledgements

This security issue was reported by @dmandefy through huntr.com.

Database specific 
{
    "nvd_published_at": null,
    "cwe_ids": [
        "CWE-409"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2024-02-16T16:07:13Z"
}
References

Affected packages

PyPI / scrapy

Package

Name
scrapy
View open source insights on deps.dev
Purl
pkg:pypi/scrapy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.0.0
Fixed
2.11.1

Affected versions

2.*

2.0.0
2.0.1
2.1.0
2.2.0
2.2.1
2.3.0
2.4.0
2.4.1
2.5.0
2.5.1
2.6.0
2.6.1
2.6.2
2.6.3
2.7.0
2.7.1
2.8.0
2.9.0
2.10.0
2.10.1
2.11.0

PyPI / scrapy

Package

Name
scrapy
View open source insights on deps.dev
Purl
pkg:pypi/scrapy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.4

Affected versions

0.*

0.7
0.8
0.9
0.10.4.2364
0.12.0.2550
0.14.1
0.14.2
0.14.3
0.14.4
0.16.0
0.16.1
0.16.2
0.16.3
0.16.4
0.16.5
0.18.0
0.18.1
0.18.2
0.18.3
0.18.4
0.20.0
0.20.1
0.20.2
0.22.0
0.22.1
0.22.2
0.24.0
0.24.1
0.24.2
0.24.3
0.24.4
0.24.5
0.24.6

1.*

1.0.0rc1
1.0.0rc2
1.0.0rc3
1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.1.0rc1
1.1.0rc2
1.1.0rc3
1.1.0rc4
1.1.0
1.1.1
1.1.2
1.1.3
1.1.4
1.2.0
1.2.1
1.2.2
1.2.3
1.3.0
1.3.1
1.3.2
1.3.3
1.4.0
1.5.0
1.5.1
1.5.2
1.6.0
1.7.0
1.7.1
1.7.2
1.7.3
1.7.4
1.8.0
1.8.1
1.8.2
1.8.3