vulnerability
Alpine Linux: CVE-2021-3657: Improper Restriction of Operations within the Bounds of a Memory Buffer
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | Feb 18, 2022 | Aug 22, 2024 | Dec 22, 2025 |
Severity
7
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Feb 18, 2022
Added
Aug 22, 2024
Modified
Dec 22, 2025
Description
A flaw was found in mbsync versions prior to 1.4.4. Due to inadequate handling of extremely large (>=2GiB) IMAP literals, malicious or compromised IMAP servers, and hypothetically even external email senders, could cause several different buffer overflows, which could conceivably be exploited for remote code execution.
Solution
alpine-linux-upgrade-isync
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