CVE-2018-20177

Name	CVE-2018-20177
Description	rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a Heap-Based Buffer Overflow in the function rdp_in_unistr() and results in memory corruption and possibly even a remote code execution.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DLA-1683-1, DSA-4394-1
NVD severity	high (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rdesktop (PTS)	jessie	1.8.2-3+deb8u1	vulnerable
	jessie (security)	1.8.6-0+deb8u2	fixed
	stretch	1.8.4-1~deb9u1	fixed
	stretch (security)	1.8.6-2~deb9u1	fixed
	bullseye, sid, buster	1.8.6-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin
rdesktop	source	(unstable)	1.8.4-1	high
rdesktop	source	jessie	1.8.4-0+deb8u1	high	DLA-1683-1
rdesktop	source	stretch	1.8.4-1~deb9u1	high	DSA-4394-1

https://github.com/rdesktop/rdesktop/commit/766ebcf6f23ccfe8323ac10242ae6e127d4505d2 (v1.8.4)