Multiple vulnerabilities in Nitro Pro

Published: 2021-10-15

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-21796 CVE-2021-21797
CWE-ID	CWE-416 CWE-415
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Nitro Pro Client/Desktop applications / Office applications
Vendor	Nitro Software, Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU57383

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21796

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the JavaScript implementation within the "local_file_path" object. A remote attacker can trick a victim to open a specially crafted document and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nitro Pro: 13.31.0.605 - 13.33.2.645

External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1265

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

2) Double Free

EUVDB-ID: #VU57384