CVE-2020-11939

Name	CVE-2020-11939
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	972050

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ndpi (PTS)	bookworm	4.2-2	fixed
	forky, sid, trixie	4.2-2.1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Debian Bugs
ndpi	source	jessie	(not affected)
ndpi	source	stretch	(not affected)
ndpi	source	buster	(not affected)
ndpi	source	(unstable)	3.4-1	972050

Notes

[buster] - ndpi <not-affected> (Introduced in 3.0)
[stretch] - ndpi <not-affected> (Introduced in 3.0)
[jessie] - ndpi <not-affected> (Introduced in 3.0)
https://github.com/ntop/nDPI/commit/7ce478a58b4dd29a8d1e6f4e9df2f778613d9202 (3.4)
https://securitylab.github.com/advisories/GHSL-2020-051_052-ntop-ndpi