Detections
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Alpine: multiple isync packages: security update to 1.4.1-r0

high Tenable Self-Hosted Container Security Plugin ID 405022

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - A flaw was found in mbsync before v1.3.5 and v1.4.1. Validations of the mailbox names returned by IMAP
 LIST/LSUB do not occur allowing a malicious or compromised server to use specially crafted mailbox names
 containing '..' path components to access data outside the designated mailbox on the opposite end of the
 synchronization channel. The highest threat from this vulnerability is to data confidentiality and
 integrity. (CVE-2021-20247)

See Also

https://security.alpinelinux.org/vuln/CVE-2021-20247

Plugin Details

Severity: High

ID: 405022

Version: Revision 1.27

Type: Local

Published: 10/31/2023

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.04

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2021-20247

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2/22/2021

Reference Information

CVE: CVE-2021-20247