Multiple vulnerabilities in Transfer.sh

Published: 2021-05-26

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-33496 CVE-2021-33497
CWE-ID	CWE-79 CWE-22
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	transfer.sh Web applications / Modules and components for CMS
Vendor	Dutchcoders

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU53594

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-33496

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in an inline view. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

transfer.sh: 1.0.0 - 1.2.3

CPE2.3

External links

http://vuln.ryotak.me/advisories/43
http://github.com/dutchcoders/transfer.sh/pull/373
http://github.com/dutchcoders/transfer.sh/releases/tag/v1.2.4
http://github.com/dutchcoders/transfer.sh/commit/9df18fdc69de2e71f30d8c1e6bfab2fda2e52eb4

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.

2) Path traversal

EUVDB-ID: #VU53597

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-33497

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