CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
Percentile
78.2%
Severity: High
Date : 2021-02-27
CVE-ID : CVE-2021-20247
Package : isync
Type : directory traversal
Remote : Yes
Link : https://security.archlinux.org/AVG-1598
The package isync before version 1.3.5-1 is vulnerable to directory
traversal.
Upgrade to 1.3.5-1.
The problem has been fixed upstream in version 1.3.5.
None.
A security issue was found in isync/mbsync before versions 1.3.5 and
1.4.1. 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.
A compromised server could traverse files on the system.
https://www.openwall.com/lists/oss-security/2021/02/22/1
https://sourceforge.net/p/isync/isync/ci/fe5d59f8e3169944e57eb1c60155c9ebd4912d48/
https://security.archlinux.org/CVE-2021-20247
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
Percentile
78.2%