Vulnerability Details : CVE-2021-43777
Redash is a package for data visualization and sharing. In Redash version 10.0 and prior, the implementation of Google Login (via OAuth) incorrectly uses the `state` parameter to pass the next URL to redirect the user to after login. The `state` parameter should be used for a Cross-Site Request Forgery (CSRF) token, not a static and easily predicted value. This vulnerability does not affect users who do not use Google Login for their instance of Redash. A patch in the `master` and `release/10.x.x` branches addresses this by replacing `Flask-Oauthlib` with `Authlib` which automatically provides and validates a CSRF token for the state variable. The new implementation stores the next URL on the user session object. As a workaround, one may disable Google Login to mitigate the vulnerability.
Vulnerability category: Cross-site request forgery (CSRF)Open redirect
Products affected by CVE-2021-43777
- cpe:2.3:a:redash:redash:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43777
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43777
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:N |
8.6
|
4.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST | |
|
6.8
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
1.6
|
5.2
|
GitHub, Inc. |
CWE ids for CVE-2021-43777
-
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.Assigned by: security-advisories@github.com (Secondary)
-
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-43777
-
https://github.com/getredash/redash/security/advisories/GHSA-vhc7-w7r8-8m34
Insecure use of state parameter for Google OAuth Login · Advisory · getredash/redash · GitHubThird Party Advisory
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https://github.com/getredash/redash/commit/da696ff7f84787cbf85967460fac52886cbe063e
Merge pull request from GHSA-vhc7-w7r8-8m34 · getredash/redash@da696ff · GitHubPatch;Third Party Advisory
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