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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