Buffer overflow in Airforce Nitf Extract Utility

CVE-2020-13995

U.S. Air Force Sensor Data Management System extract75 has a buffer overflow that leads to code execution. An overflow in a global variable (sBuffer) leads to a Write-What-Where outcome. Writing beyond sBuffer will clobber most global variables until reaching a pointer such as DES_info or image_info. By controlling that pointer, one achieves an arbitrary write when its fields are assigned. The data written is from a potentially untrusted NITF file in the form of an integer. The attacker can gain control of the instruction pointer.

Vulnerability class: Buffer Overflow

EPSS: 0.027 (84.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-13995?
CVE-2020-13995 is a critical-severity vulnerability in Airforce Nitf Extract Utility, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-09-25.
How severe is CVE-2020-13995?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-13995 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.