Path traversal in Isync: mailbox synchronizer



Published: 2021-02-23
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-20247
CWE-ID CWE-22
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Isync: mailbox synchronizer
Other software / Other software solutions

Vendor ossi

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Path traversal

EUVDB-ID: #VU50871

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20247

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to improper validation of mailbox names returned by IMAP LIST/LSUB in the mbsync command. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Isync: mailbox synchronizer: 1.3.4, 1.4.0

CPE2.3 External links

http://seclists.org/oss-sec/2021/q1/170

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###