Vulnerability · Published Apr 23, 2021 · Assigned by Vaadin
CVE-2021-31403Timing side channel vulnerability in UIDL request handler in Vaadin 7 and 8
Medium 4.0
In plain English
A medium-severity security flaw in Vaadin from Vaadin. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.0Medium
Exploit odds (30 days)0.3%top 76.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:vaadin-server versions 7.0.0 through 7.7.23 (Vaadin 7.0.0 through 7.7.23), and 8.0.0 through 8.12.2 (Vaadin 8.0.0 through 8.12.2) allows attacker to guess a security token via timing attack
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | com.vaadin:vaadin-bom | 7.7.24 | GHSA-75xc-qvxh-27f8 |
| Maven | com.vaadin:vaadin-bom | 8.12.3 | GHSA-75xc-qvxh-27f8 |
| Maven | com.vaadin:vaadin-server | 7.7.24 | GHSA-75xc-qvxh-27f8 |
| Maven | com.vaadin:vaadin-server | 8.12.3 | GHSA-75xc-qvxh-27f8 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Vaadin | Vaadin | 7.0.0 – before * |
| Vaadin | vaadin-server | 7.0.0 – before * |
Weakness: CWE-208 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
References
- https://vaadin.com/security/cve-2021-31403 x_refsource_MISC
- https://github.com/vaadin/framework/pull/12190 x_refsource_MISC
- https://github.com/vaadin/framework/pull/12188 x_refsource_MISC