CVE-2020-11939 Detail

Current Description

In nDPI through 3.2 Stable, the SSH protocol dissector has multiple KEXINIT integer overflows that result in a controlled remote heap overflow in concat_hash_string in ssh.c. Due to the granular nature of the overflow primitive and the ability to control both the contents and layout of the nDPI library's heap memory through remote input, this vulnerability may be abused to achieve full Remote Code Execution against any network inspection stack that is linked against nDPI and uses it to perform network traffic analysis.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
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


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Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/ntop/nDPI/commit/7ce478a58b4dd29a8d1e6f4e9df2f778613d9202 Patch  Third Party Advisory 
https://securitylab.github.com/advisories/GHSL-2020-051_052-ntop-ndpi Exploit  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-190 Integer Overflow or Wraparound cwe source acceptance level NIST  

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Change History

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Quick Info

CVE Dictionary Entry:
CVE-2020-11939
NVD Published Date:
04/23/2020
NVD Last Modified:
05/01/2020
Source:
MITRE