CVE-2024-46544

Local disclosure and service interruption via permissive JkShmFile

Published Sep 23, 2024 · Updated Oct 31, 2024

Incorrect default permissions in Apache Tomcat Connectors 1.2.9-beta through 1.2.49 allow local users to read or alter mod_jk shared memory. The non-Windows do_shm_open path creates the JkShmFile mapping and its lock files with mode 0666, exposing configuration and status data. Only Unix-like mod_jk deployments are affected; local access permits information disclosure or a service interruption by corrupting runtime state.

CVSS severity5.9
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect default permissions in Apache Tomcat Connectors 1.2.9-beta through 1.2.49 allow local users to read or alter mod_jk shared memory. The non-Windows do_shm_open path creates the JkShmFile mapping and its lock files with mode 0666, exposing configuration and status data. Only Unix-like mod_jk deployments are affected; local access permits information disclosure or a service interruption by corrupting runtime state.

The record

CVE
CVE-2024-46544
Published
Sep 23, 2024
Updated
Oct 31, 2024
Vendor
The Apache Software Foundation
Product
Apache Tomcat Connectors
Classifications
CWE-276, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 31, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.2.9-beta <=1.2.49

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Tomcat Connectorsversion=1.2.9-beta <=1.2.49

Published CVSS scores

5.9Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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