by Kastro
Paper/Archive/CVE-2021-3657

CVE-2021-3657

fedora — A flaw was found in mbsync versions prior to 1.4.4.

EPSS 3%CVSS 9.8
critical.is priorityof 100
47
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 89.1.891 × 2017.8No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
isyncisync 1.4.4–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refbugzilla.redhat.com/show_bug.cgi?id=2028932refopenwall.com/lists/oss-security/2021/12/03/1reflists.debian.org/debian-lts-announce/2022/07/msg00001.htmladvisorysecurity.gentoo.org/glsa/202208-15