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CVE-2024-24549

Apache Tomcat: HTTP/2 header handling DoS

HIGH
7.5
CVSS Score
Published: March 13, 2024 at 03:46 PM UTC
Updated: June 17, 2026 at 07:14 AM UTC
3 products affected across 3 vendorsDebian LinuxFedoraTomcat

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Severity
HIGH7.5
Exploit prediction
EPSS 23%
SSVC
No known exploit

Description

Denial of Service due to improper input validation vulnerability for HTTP/2 requests in Apache Tomcat. When processing an HTTP/2 request, if the request exceeded any of the configured limits for headers, the associated HTTP/2 stream was not reset until after all of the headers had been processed.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98. Users are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tomcat· Apache
95%
10.1.0 ≤ v < 10.1.1910.1.0-M1 ≤ v ≤ 10.1.1811.0.0-M1 ≤ v ≤ 11.0.0-M168.5.0 ≤ v ≤ 8.5.988.5.0 ≤ v < 8.5.999.0.0 ≤ v < 9.0.869.0.0-M1 ≤ v ≤ 9.0.8510.1.0-M111.0.0 milestone111.0.0 milestone1011.0.0 milestone1111.0.0 milestone1211.0.0 milestone1311.0.0 milestone1411.0.0 milestone1511.0.0 milestone1611.0.0 milestone211.0.0 milestone311.0.0 milestone411.0.0 milestone511.0.0 milestone611.0.0 milestone711.0.0 milestone811.0.0 milestone911.0.0-M18.5.09.0.0-M1
Affected range stops below 10.1.19, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.5.99, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.86, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 10.0.0-M1 (unknown)
Debian Linux· Debiandrupal
95%
10.0
Fedora· Fedora Projectrpm
95%
3940

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (6)

Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2024/03/13/3
Vendor Advisory
Source: [email protected]
https://lists.apache.org/thread/4c50rmomhbbsdgfjsgwlb51xdwfjdcvg
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2024/04/msg00001.html
Third Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/[email protected]/message/3UWIS5MMGYDZBLJYT674ZI5AWFHDZ46B/
Third Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/[email protected]/message/736G4GPZWS2DSQO5WKXO3G6OMZKFEK55/
Third Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20240402-0002/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20NVD-CWE-noinfo

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