#VU16697 Out-of-bounds read in Quick PDF Library - CVE-2018-20248

Vulnerability identifier: #VU16697

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-20248

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Quick PDF Library
Client/Desktop applications / Multimedia software

Vendor: Foxit Software Inc.

Description

The vulnerability allows a local attacker to bypass security restrictions the target system.

The weakness exists due to out-of-bounds read when handling malicious input. A local attacker can load a malformed or malicious PDF containing invalid xref table pointers or invalid xref table data using the LoadFromFile, LoadFromString, LoadFromStream, DAOpenFile or DAOpenFileReadOnly functions, trigger memory corruption and bypass security restrictions to conduct further attacks.

Mitigation
Update to version 16.12.

Vulnerable software versions

Quick PDF Library: 7.12 - 16.11

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External links
https://www.foxitsoftware.com/support/security-bulletins.php

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.