CVE-2018-20181

rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in the function seamless_process() and results in memory corruption and probably even a remote code execution.
Wrap or Wraparound
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 94%
VendorProductVersion
rdesktoprdesktop
𝑥
≤ 1.8.3
debiandebian_linux
8.0
debiandebian_linux
9.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
rdesktop
bookworm
1.9.0-2
fixed
bullseye
1.9.0-2
fixed
sid
1.9.0-2
fixed
trixie
1.9.0-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
rdesktop
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
not-affected
hirsute
not-affected
groovy
not-affected
focal
not-affected
eoan
not-affected
disco
not-affected
cosmic
ignored
bionic
needed
xenial
needed
trusty
dne
Common Weakness Enumeration
References
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html
http://www.securityfocus.com/bid/106938
https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1
https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html
https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/
https://security.gentoo.org/glsa/201903-06
https://www.debian.org/security/2019/dsa-4394
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html
http://www.securityfocus.com/bid/106938
https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1
https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html
https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/
https://security.gentoo.org/glsa/201903-06
https://www.debian.org/security/2019/dsa-4394