Vulnerability Details : CVE-2020-35217
Vert.x-Web framework v4.0 milestone 1-4 does not perform a correct CSRF verification. Instead of comparing the CSRF token in the request with the CSRF token in the cookie, it compares the CSRF token in the cookie against a CSRF token that is stored in the session. An attacker does not even need to provide a CSRF token in the request because the framework does not consider it. The cookies are automatically sent by the browser and the verification will always succeed, leading to a successful CSRF attack.
Vulnerability category: Cross-site request forgery (CSRF)
Products affected by CVE-2020-35217
- cpe:2.3:a:eclipse:vert.x-web:4.0.0:milestone1:*:*:*:*:*:*
- cpe:2.3:a:eclipse:vert.x-web:4.0.0:milestone2:*:*:*:*:*:*
- cpe:2.3:a:eclipse:vert.x-web:4.0.0:milestone3:*:*:*:*:*:*
- cpe:2.3:a:eclipse:vert.x-web:4.0.0:milestone4:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-35217
0.07%
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-2020-35217
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2020-35217
-
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-35217
-
https://github.com/vert-x3/vertx-web/pull/1613
Fixes CSRF when working along side sessions by pmlopes · Pull Request #1613 · vert-x3/vertx-web · GitHubPatch;Third Party Advisory
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