CVE catalog

CVE-2020-11940

ndpi: CVE-2020-11940

Severity: Medium
Published: Apr 23, 2020, 3:15:14 PM UTC
Source: [NVD] · [CVE record]
EPSS: 1.32% · Oct 25, 2026

In nDPI through 3.2 Stable, an out-of-bounds read in concat_hash_string in ssh.c can be exploited by a network-positioned attacker that can send malformed SSH protocol messages on a network segment monitored by nDPI's library.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	ndpi	sid	`4.2-2.1`	fixed
Debian	ndpi	forky	`4.2-2.1`	fixed
Debian	ndpi	trixie	`4.2-2.1`	fixed
Debian	ndpi	bookworm	`4.2-2`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	ndpi	source	sid	`3.4-1`	not yet assigned	Not reported	[972050]
Debian	ndpi	source	forky	`3.4-1`	not yet assigned	Not reported	[972050]
Debian	ndpi	source	trixie	`3.4-1`	not yet assigned	Not reported	[972050]
Debian	ndpi	source	bookworm	`3.4-1`	not yet assigned	Not reported	[972050]

[Debian bug #972050]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libndpi4.2]Fixed
Source package: [ndpi]
Details (2)
- 4.2-2 · amd64 · bookworm
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · bookworm; dsa · ndpi · debian · 12
- 4.2-2 · arm64 · bookworm
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · bookworm; dsa · ndpi · debian · 12
[libndpi-bin]Fixed
Source package: [ndpi]
Details (2)
- 4.2-2 · amd64 · bookworm
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · bookworm; dsa · ndpi · debian · 12
- 4.2-2 · arm64 · bookworm
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · bookworm; dsa · ndpi · debian · 12
[libndpi-dev]Fixed
Source package: [ndpi]
Details (2)
- 4.2-2 · amd64 · bookworm
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · bookworm; dsa · ndpi · debian · 12
- 4.2-2 · arm64 · bookworm
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · bookworm; dsa · ndpi · debian · 12
[libndpi-wireshark]Fixed
Source package: [ndpi]
Details (2)
- 4.2-2 · amd64 · bookworm
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · bookworm; dsa · ndpi · debian · 12
- 4.2-2 · arm64 · bookworm
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · bookworm; dsa · ndpi · debian · 12

[Debian 13 (Trixie)]

[libndpi4.2t64]Fixed
Source package: [ndpi]
Details (2)
- 4.2-2.1+b3 · amd64 · trixie
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · 13
- 4.2-2.1+b3 · arm64 · trixie
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · 13
[libndpi-bin]Fixed
Source package: [ndpi]
Details (2)
- 4.2-2.1+b3 · amd64 · trixie
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · 13
- 4.2-2.1+b3 · arm64 · trixie
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · 13
[libndpi-dev]Fixed
Source package: [ndpi]
Details (2)
- 4.2-2.1+b3 · amd64 · trixie
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · 13
- 4.2-2.1+b3 · arm64 · trixie
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · 13
[libndpi-wireshark]Fixed
Source package: [ndpi]
Details (2)
- 4.2-2.1+b3 · amd64 · trixie
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · 13
- 4.2-2.1+b3 · arm64 · trixie
  Fixed · Fixed: 3.4-1
  dsa · ndpi · debian · 13

Observed: Oct 23, 2026, 5:47:01 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]