CVE-2021-37705
"OneFuzz Multi-Tenant Domain Authorization Bypass Vulnerability"
Description
OneFuzz 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.
INFO
Published Date :
Aug. 13, 2021, 9:15 p.m.
Last Modified :
Nov. 21, 2024, 6:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
6.0
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-37705.
| URL | Resource |
|---|---|
| https://github.com/microsoft/onefuzz/commit/2fcb4998887959b4fa11894a068d689189742cb1 | Patch Third Party Advisory |
| https://github.com/microsoft/onefuzz/pull/1153 | Patch Third Party Advisory |
| https://github.com/microsoft/onefuzz/releases/tag/2.31.0 | Release Notes Third Party Advisory |
| https://github.com/microsoft/onefuzz/security/advisories/GHSA-q5vh-6whw-x745 | Third Party Advisory |
| https://pypi.org/project/onefuzz/ | Product |
| https://github.com/microsoft/onefuzz/commit/2fcb4998887959b4fa11894a068d689189742cb1 | Patch Third Party Advisory |
| https://github.com/microsoft/onefuzz/pull/1153 | Patch Third Party Advisory |
| https://github.com/microsoft/onefuzz/releases/tag/2.31.0 | Release Notes Third Party Advisory |
| https://github.com/microsoft/onefuzz/security/advisories/GHSA-q5vh-6whw-x745 | Third Party Advisory |
| https://pypi.org/project/onefuzz/ | Product |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-37705 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-37705 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/microsoft/onefuzz/commit/2fcb4998887959b4fa11894a068d689189742cb1 Added Reference https://github.com/microsoft/onefuzz/pull/1153 Added Reference https://github.com/microsoft/onefuzz/releases/tag/2.31.0 Added Reference https://github.com/microsoft/onefuzz/security/advisories/GHSA-q5vh-6whw-x745 Added Reference https://pypi.org/project/onefuzz/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Oct. 27, 2022
Action Type Old Value New Value Added CWE NIST CWE-863 -
Initial Analysis by [email protected]
Aug. 30, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Changed Reference Type https://github.com/microsoft/onefuzz/commit/2fcb4998887959b4fa11894a068d689189742cb1 No Types Assigned https://github.com/microsoft/onefuzz/commit/2fcb4998887959b4fa11894a068d689189742cb1 Patch, Third Party Advisory Changed Reference Type https://github.com/microsoft/onefuzz/pull/1153 No Types Assigned https://github.com/microsoft/onefuzz/pull/1153 Patch, Third Party Advisory Changed Reference Type https://github.com/microsoft/onefuzz/releases/tag/2.31.0 No Types Assigned https://github.com/microsoft/onefuzz/releases/tag/2.31.0 Release Notes, Third Party Advisory Changed Reference Type https://github.com/microsoft/onefuzz/security/advisories/GHSA-q5vh-6whw-x745 No Types Assigned https://github.com/microsoft/onefuzz/security/advisories/GHSA-q5vh-6whw-x745 Third Party Advisory Changed Reference Type https://pypi.org/project/onefuzz/ No Types Assigned https://pypi.org/project/onefuzz/ Product Added CPE Configuration OR *cpe:2.3:a:microsoft:onefuzz:*:*:*:*:*:*:*:* versions from (including) 2.12.0 up to (excluding) 2.31.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-37705 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-37705
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.71 }} 0.00%
score
0.80276
percentile