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CVE-2021-3859

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Date: August 26, 2022

A flaw was found in Undertow that tripped the client-side invocation timeout with certain calls made over HTTP2. This flaw allows an attacker to carry out denial of service attacks.

Language: Java

Severity Score

Related Resources (11)

https://github.com/undertow-io/undertow/commit/db0f5be43f8e2a4b88fbedd2eb6d5a95a29ceaa8
https://access.redhat.com/security/cve/CVE-2021-3859
https://bugzilla.redhat.com/show_bug.cgi?id=2010378
https://github.com/undertow-io/undertow/pull/1296
https://nvd.nist.gov/vuln/detail/CVE-2021-3859
https://security-tracker.debian.org/tracker/CVE-2021-3859
https://issues.redhat.com/browse/UNDERTOW-1979
https://github.com/dart-lang/sdk/security/advisories/GHSA-c8mh-jj22-xg5h
https://github.com/undertow-io/undertow/commit/e43f0ada3f4da6e8579e0020cec3cb1a81e487c2
https://security.netapp.com/advisory/ntap-20221201-0004/
https://www.mend.io/vulnerability-database/CVE-2021-3859

Severity Score

Weakness Type (CWE)

Exposure of Resource to Wrong Sphere

CWE-668

Invocation of Process Using Visible Sensitive Information

CWE-214

Top Fix

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Upgrade Version

Upgrade to version io.undertow:undertow-core:2.2.15.Final

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CVSS v3

Base Score:
Attack Vector (AV):
Attack Complexity (AC):
Privileges Required (PR):
User Interaction (UI):
Scope (S):
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL

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