CVE-2021-3657

Published Feb 18, 2022 CVSS 3.1 · 9.8 Critical EPSS 3.5% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3066-1 isync security update
EUVD EUVD EUVD-2021-26952 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.
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
fedora
Published
Updated
Aug 3, 2024, 5:01 PM
Reserved
Jul 21, 2021, 12:00 AM
Status
Modified
Published
Feb 18, 2022, 6:15 PM
Modified
Jun 17, 2026, 4:05 AM