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CVE-2021-31404

LOWCVSS 2.5/10EPSS 0.21%

Last modified

CVE-2021-31404 is a low-severity vulnerability rated 2.5/10 on the CVSS scale. Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.4.6 (Vaadin 14.0.0 through 14.4.6), 3.0.0 prior to 5.0.0 (Vaadin 15 prior to 18), and 5.0.0 through 5.0.2 (Vaadin 18.0.0 through 18.0.5) allows attacker to guess a security token via timing attack.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.4.6 (Vaadin 14.0.0 through 14.4.6), 3.0.0 prior to 5.0.0 (Vaadin 15 prior to 18), and 5.0.0 through 5.0.2 (Vaadin 18.0.0 through 18.0.5) allows attacker to guess a security token via timing attack.

Metrics

CVSS 3.1
2.5/10

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Probability
0.21%

11.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
VaadinFlow>= 1.0.0, < 1.0.14
VaadinFlow>= 1.1.0, < 2.0.0
VaadinFlow>= 2.0.0, < 2.4.7
VaadinFlow>= 3.0.0, < 5.0.0
VaadinFlow>= 5.0.0, < 5.0.3
VaadinVaadin>= 10.0.0, < 10.0.17
VaadinVaadin>= 11.0.0, < 14.0.0
VaadinVaadin>= 14.0.0, < 14.4.7
VaadinVaadin>= 15.0.0, < 17.0.0
VaadinVaadin>= 18.0.0, < 18.0.6

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-31404?
Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.4.6 (Vaadin 14.0.0 through 14.4.6), 3.0.0 prior to 5.0.0 (Vaadin 15 prior to 18), and 5.0.0 through 5.0.2 (Vaadin 18.0.0 through 18.0.5) allows attacker to guess a security token via timing attack.
How severe is CVE-2021-31404?
CVE-2021-31404 has a CVSS score of 2.5/10 (LOW severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2021-31404?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-31404?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST