CVE-2021-37705

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Summary

CVECVE-2021-37705
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-08-13 21:15:00 UTC
Updated2022-10-27 12:46:00 UTC
DescriptionOneFuzz is an open source self-hosted Fuzzing-As-A-Service platform. Starting with OneFuzz 2.12.0 or greater, an incomplete authorization check allows an authenticated user from any Azure Active Directory tenant to make authorized API calls to a vulnerable OneFuzz instance. To be vulnerable, a OneFuzz deployment must be both version 2.12.0 or greater and deployed with the non-default --multi_tenant_domain option. This can result in read/write access to private data such as software vulnerability and crash information, security testing tools and proprietary code and symbols. Via authorized API calls, this also enables tampering with existing data and unauthorized code execution on Azure compute resources. This issue is resolved starting in release 2.31.0, via the addition of application-level check of the bearer token's `issuer` against an administrator-configured allowlist. As a workaround users can restrict access to the tenant of a deployed OneFuzz instance < 2.31.0 by redeploying in the default configuration, which omits the `--multi_tenant_domain` option.

Risk And Classification

Problem Types: CWE-863

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Microsoft Onefuzz All All All All

References

ReferenceSourceLinkTags
Fixed an issue with incomplete authorization in multi-tenant deployments by bmc-msft · Pull Request #1153 · microsoft/onefuzz · GitHub MISC github.com
Release 2.31.0 · microsoft/onefuzz · GitHub MISC github.com
Incomplete authorization in multi-tenant deployments · Advisory · microsoft/onefuzz · GitHub CONFIRM github.com
onefuzz · PyPI MISC pypi.org
Merge pull request from GHSA-q5vh-6whw-x745 · microsoft/onefuzz@2fcb499 · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 981455 Python (pip) Security Update for onefuzz (GHSA-q5vh-6whw-x745)

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