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CVE-2022-3272: rdiffweb's unlimited length email field can lead to DoS

September 27, 2022 (updated May 21, 2025)

rdiffweb prior to 2.4.8 does not validate email length, allowing users to insert an email longer than 255 characters. If a user signs up with an email with a length of 1 million or more characters and logs in, withdraws, or changes their email, the server may cause denial of service due to overload. Version 2.4.8 sets length limits for username, email, and root directory.

References

  • github.com/advisories/GHSA-qrj3-hrgj-fm7r
  • github.com/ikus060/rdiffweb
  • github.com/ikus060/rdiffweb/commit/667657c6fe2b336c90be37f37fb92f65df4feee3
  • github.com/pypa/advisory-database/tree/main/vulns/rdiffweb/PYSEC-2022-291.yaml
  • huntr.com/bounties/733678b9-daa1-4d6a-875a-382fa09a6e38
  • nvd.nist.gov/vuln/detail/CVE-2022-3272

Code Behaviors & Features

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Affected versions

All versions before 2.4.8

Fixed versions

  • 2.4.8

Solution

Upgrade to version 2.4.8 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-130: Improper Handling of Length Parameter Inconsistency

Source file

pypi/rdiffweb/CVE-2022-3272.yml

Spotted a mistake? Edit the file on GitLab.

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