Published: 18/02/2022 Updated: 26/10/2022

CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10

CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9

VMScore: 668

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

A flaw was found in mbsync 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.

Vulnerable Product	Search on Vulmon	Subscribe to Product
isync project isync
fedoraproject fedora 35
redhat enterprise linux 7.0
debian debian linux 9.0

A security issue was found in mbsync in isync versions before 144 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 ...

CWE-119 https://www.openwall.com/lists/oss-security/2021/12/03/1 https://bugzilla.redhat.com/show_bug.cgi?id=2028932 https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html https://security.gentoo.org/glsa/202208-15 https://nvd.nist.gov https://security.archlinux.org/CVE-2021-3657

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CVE-2021-3657

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