Input validation error in Foxit PhantomPDF Mac and Foxit Reader Mac

1) Input validation error

EUVDB-ID: #VU48712

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the application fails to identify the objects in the incremental update when the Subtype entry of the Annotation dictionary is set as null. A remote attacker can perform the Evil Annotation Attack and deliver incorrect validation results when validating certain certified PDF files whose visible content was significantly altered.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Foxit PDF Editor (formerly Foxit PhantomPDF): 4.1.0.1023

Foxit Reader for Mac: 4.1.0.1023

External links

http://www.foxitsoftware.com/support/security-bulletins.html?Security+updates+available+in+Foxit+PhantomPDF+Mac+4.1.1+and+Foxit+Reader+Mac+4.1.12020-11-30+00%3A00%3A00

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.