vulnerability
Arch Linux: Arbitrary code execution (CVE-2021-3657)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | Feb 18, 2022 | Jul 11, 2025 | Nov 27, 2025 |
Severity
7
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Feb 18, 2022
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A security issue was found in mbsync in isync versions before 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
arch-linux-upgrade-latest
References
- CVE-2021-3657
- https://attackerkb.com/topics/CVE-2021-3657
- URL-https://bugzilla.redhat.com/show_bug.cgi?id=2028932
- URL-https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html
- URL-https://security.archlinux.org/ASA-202112-5
- URL-https://security.gentoo.org/glsa/202208-15
- URL-https://www.openwall.com/lists/oss-security/2021/12/03/1
- CWE-119
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