CVE Vulnerability

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.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

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

References
Link Resource
https://www.openwall.com/lists/oss-security/2021/12/03/1 Mailing List Third Party Advisory
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
Configurations

Configuration 1

cpe:2.3:a:isync_project:isync:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Information

Published : 2022-02-18 06:15

Updated : 2022-12-21 03:01

NVD link : CVE-2021-3657

Mitre link : CVE-2021-3657

Products Affected
No products.
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer