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undertow Race Condition vulnerability

Moderate severity GitHub Reviewed Published May 25, 2022 to the GitHub Advisory Database • Updated Jan 31, 2023

Package

maven io.undertow:undertow-core (Maven)

Affected versions

>= 2.1.0, <= 2.2.8.Final
<= 2.0.38.Final

Patched versions

2.2.9.Final
2.0.39.Final

Description

A flaw was found in undertow. The HTTP2SourceChannel fails to write the final frame under some circumstances, resulting in a denial of service. The highest threat from this vulnerability is availability. This flaw affects Undertow versions prior to 2.0.35.SP1, prior to 2.2.6.SP1, prior to 2.2.7.SP1, prior to 2.0.36.SP1, prior to 2.2.9.Final and prior to 2.0.39.Final.

References

Published by the National Vulnerability Database May 24, 2022
Published to the GitHub Advisory Database May 25, 2022
Reviewed May 25, 2022
Last updated Jan 31, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.091%
(40th percentile)

Weaknesses

CVE ID

CVE-2021-3597

GHSA ID

GHSA-mfhv-gwf8-4m88

Source code

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