Buffer overflow in Gonitro Nitro Pro

CVE-2020-6146

An exploitable code execution vulnerability exists in the rendering functionality of Nitro Pro 13.13.2.242 and 13.16.2.300. When drawing the contents of a page and selecting the stroke color from an 'ICCBased' colorspace, the application will read a length from the file and use it as a loop sentinel when writing data into the member of an object. Due to the object member being a buffer of a static size allocated on the heap, this can result in a heap-based buffer overflow. A specially crafted document must be loaded by a victim in order to trigger this vulnerability.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.755 (99.5th percentile), scored .

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-6146: fell from 0.761 to 0.755.

EPSS over last 30 days · oldest: 0.761 · newest: 0.755 · change: -0.006

Affected products

  • Gonitro Nitro Pro — versions 13.13.2.242, 13.16.2.300
  • Nitro Pro — versions Nitro Pro 13.13.2.242, Nitro Pro 13.16.2.300

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-6146?
CVE-2020-6146 is a high-severity vulnerability in Gonitro Nitro Pro, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2020-09-16.
How severe is CVE-2020-6146?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2020-6146 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.