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Security Advisories: GSA_kwCzR0hTQS1nY3gyLWd2ajctcHh2M801FA
Insufficient Protection against HTTP Request Smuggling in mitmproxy
Impact
In mitmproxy 7.0.4 and below, a malicious client or server is able to perform HTTP request smuggling attacks through mitmproxy. This means that a malicious client/server could smuggle a request/response through mitmproxy as part of another request/response's HTTP message body. While mitmproxy would only see one request, the target server would see multiple requests. A smuggled request is still captured as part of another request's body, but it does not appear in the request list and does not go through the usual mitmproxy event hooks, where users may have implemented custom access control checks or input sanitization.
Unless you use mitmproxy to protect an HTTP/1 service, no action is required.
Patches
The vulnerability has been fixed in mitmproxy 8.0.0 and above.
Acknowledgements
We thank Zeyu Zhang (@zeyu2001) for responsibly disclosing this vulnerability to the mitmproxy team.
Timeline
- 2022-03-15: Received initial report.
- 2022-03-15: Verified report and confirmed receipt.
- 2022-03-16: Shared patch with researcher.
- 2022-03-16: Received confirmation that patch is working.
- 2022-03-19: Published patched release and advisory.
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1nY3gyLWd2ajctcHh2M801FA
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: about 2 years ago
Updated: 8 months ago
CVSS Score: 9.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Identifiers: GHSA-gcx2-gvj7-pxv3, CVE-2022-24766
References:
- https://github.com/mitmproxy/mitmproxy/security/advisories/GHSA-gcx2-gvj7-pxv3
- https://nvd.nist.gov/vuln/detail/CVE-2022-24766
- https://github.com/mitmproxy/mitmproxy/commit/b06fb6d157087d526bd02e7aadbe37c56865c71b
- https://mitmproxy.org/posts/releases/mitmproxy8/
- https://github.com/advisories/GHSA-gcx2-gvj7-pxv3
Blast Radius: 27.5
Affected Packages
pypi:mitmproxy
Dependent packages: 24Dependent repositories: 639
Downloads: 352,246 last month
Affected Version Ranges: < 8.0.0
Fixed in: 8.0.0
All affected versions: 0.8.1, 0.9.1, 0.9.2, 0.10.1, 0.11.1, 0.11.2, 0.11.3, 0.12.0, 0.12.1, 0.14.0, 0.18.1, 0.18.2, 0.18.3, 1.0.0, 1.0.1, 1.0.2, 2.0.0, 2.0.1, 2.0.2, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 4.0.0, 4.0.1, 4.0.3, 4.0.4, 5.0.0, 5.0.1, 5.1.0, 5.1.1, 5.3.0, 6.0.0, 6.0.1, 6.0.2, 7.0.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4
All unaffected versions: 8.0.0, 8.1.0, 8.1.1, 9.0.0, 9.0.1, 10.0.0, 10.1.0, 10.1.1, 10.1.2, 10.1.3, 10.1.4, 10.1.5, 10.1.6, 10.2.0, 10.2.1, 10.2.2, 10.2.3, 10.2.4, 10.3.0