#VU57384 Double Free in Nitro Pro - CVE-2021-21797

Vulnerability identifier: #VU57384

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-21797

CWE-ID: CWE-415

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Nitro Pro
Client/Desktop applications / Office applications

Vendor: Nitro Software, Inc.

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the JavaScript implementation. A remote attacker can trick a victim to open a specially crafted document, trigger double free error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Nitro Pro: 13.31.0.605 - 13.33.2.645

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External links
https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1266

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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.