Buffer overflow in Gonitro Nitro Pro

CVE-2020-6113

An exploitable vulnerability exists in the object stream parsing functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242 when updating its cross-reference table. When processing an object stream from a PDF document, the application will perform a calculation in order to allocate memory for the list of indirect objects. Due to an error when calculating this size, an integer overflow may occur which can result in an undersized buffer being allocated. Later when initializing this buffer, the application can write outside its bounds which can cause a memory corruption that can lead to code execution. A specially crafted document can be delivered to a victim in order to trigger this vulnerability.

Vulnerability class: Integer Overflow

EPSS: 0.650 (99.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

  • Gonitro Nitro_pro — versions 13.13.2.242, 13.16.2.300
  • N/a 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-2020-6113?
CVE-2020-6113 is a high-severity vulnerability in Gonitro Nitro Pro, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2020-09-17.
How severe is CVE-2020-6113?
High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2020-6113 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.