Denial of service in Foxit Reader for Linux

1) Use-after-free

EUVDB-ID: #VU17708

Risk: Low

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

CVE-ID: CVE-2019-7317

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition.

The vulnerability exists due to a use-after-free memory error in the png_image_free function, as defined in the png.c source code file when calling on png_safe_execute. A remote attacker can send specially crafted data, trigger a call on png_safe_execute and trigger memory corruption, resulting in a DoS condition.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Foxit Reader for Linux: 2.4.4.0910

External links

http://www.foxitsoftware.com/support/security-bulletins.html?Security+update+available+in+Foxit+Reader+for+Linux+2.4.52022-08-02+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.