CVE-2021-40111: Loop with Unreachable Exit Condition ('Infinite Loop')

January 4, 2022 (updated January 12, 2022)

In Apache James, while fuzzing with Jazzer the IMAP parsing stack, we discover that crafted APPEND and STATUS IMAP command could be used to trigger infinite loops resulting in expensive CPU computations and OutOfMemory exceptions.This vulnerability had been patched in Apache James and higher. We recommend the upgrade.

References

www.openwall.com/lists/oss-security/2022/01/04/3
nvd.nist.gov/vuln/detail/CVE-2021-40111
www.openwall.com/lists/oss-security/2022/01/04/3

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