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Date: Tue, 04 Jan 2022 05:55:27 +0000
From: Benoit Tellier <btellier@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2021-40110: Apache James IMAP vulnerable to a ReDoS
Severity: moderate
Description:
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
This issue is being tracked as JAMES-3635
Mitigation:
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.
Credit:
Apache James PMC would like to thanks Benoit TELLIER for this report.
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