CVE-2021-40110 - CVE House

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Status published High CVE-2021-40110

Apache James IMAP vulnerable to a ReDoS

7.5 CVSS

Vulnerability Description

In Apache James, using Jazzer fuzzer, we identified that an IMAP user can craft IMAP LIST commands to orchestrate a Denial Of Service using a vulnerable Regular expression. This affected Apache James prior to 3.6.1 We recommend upgrading to Apache James 3.6.1 or higher , which enforce the use of RE2J regular expression engine to execute regex in linear time without back-tracking.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Apache James PMC would like to thanks Benoit TELLIER for this report.

References

More from Apache Software Foundation

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Apache Uniffle: Insecure SSL Configuration in Uniffle HTTP Client

Apache Struts, Apache Struts: XXE vulnerability in outdated XWork component

Affected Vendor

Apache Software Foundation

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Affected Software

Apache James

Vulnerable Versions:

Apache James

Timeline

Official Publish: January 4th, 2022

Last Modified: August 4th, 2024

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.