Quick answers
- Is CVE-2017-5556 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2017-5556 being exploited in the wild.
- How severe is CVE-2017-5556?
- High severity, with a CVSS score of 8.1, published 23 January 2017.
- Which products and versions are affected?
- Foxit Foxit Reader Before 8.2; Foxit PhantomPDF Before 8.2.
- Is there a fix for CVE-2017-5556?
- A patch was published on 2017-01-11: Coordinated public release of advisory and fix in version 8.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2017-5556 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2017-5556?
- Check whether you run Foxit PDF Reader, Foxitsoftware Foxit Reader, Foxitsoftware Phantompdf or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An out-of-bounds read vulnerability exists in the ConvertToPDF plugin of Foxit Reader and PhantomPDF when processing JPEG images. The flaw is triggered when the application fails to properly validate user-supplied data within a JPEG file, leading to a read past the end of an allocated buffer. While the primary impact is an application crash (denial of service), the out-of-bounds read can also result in the disclosure of sensitive memory information. An attacker could potentially chain this with other vulnerabilities to achieve remote code execution. Exploitation requires a user to open a malicious JPEG or visit a page containing one. The issue is addressed in version 8.2.
Affected products
- Foxit Foxit Reader Before 8.2
- Foxit PhantomPDF Before 8.2
Timeline
- 2016-12-01: disclosed: Vulnerability reported to vendor
- 2017-01-11: patched: Coordinated public release of advisory and fix in version 8.2
- 2017-01-23: advisory: NVD published date