CVE-2018-17623 Use after free in Foxit Reader
Remote attackers can execute arbitrary code via a malicious PDF file due to improper object validation in Foxit Reader.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2018-17623?
CVE-2018-17623 is a high-severity use after free vulnerability in Foxitsoftware Phantompdf, published on 29 Oct 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of Link objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-6434.
Weakness: CWE-416
Which versions are affected by CVE-2018-17623?
It affects 2 products.
Products include Foxitsoftware Phantompdf, Foxitsoftware Reader.
How do I fix CVE-2018-17623?
No fix has been published for CVE-2018-17623 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2018-17623 being exploited?
There is no known exploitation of CVE-2018-17623 in the wild and no public exploit code.
Other vulnerabilities in Foxitsoftware Phantompdf
Sources
Also known as GHSA-gqv4-m36w-q35f.