CVE-2021-3657

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.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=2028932	Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202208-15	Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/12/03/1	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:isync_project:isync:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

Configuration 4 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2022-02-18 18:15

Updated : 2022-12-21 15:01

NVD link : CVE-2021-3657

Mitre link : CVE-2021-3657

CVE.ORG link : CVE-2021-3657

JSON object : View

Products Affected

redhat

enterprise_linux

debian

debian_linux

isync_project

isync

fedoraproject

fedora

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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