CVE-2018-1000852 Information disclosure in n/a

Medium 6.5 Published 20 Dec 2018 Updated 5 Aug 2024

A malicious RDP server can read client memory via a crafted capability request when the echo option is enabled.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2018-1000852?

CVE-2018-1000852 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 20 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

FreeRDP FreeRDP 2.0.0-rc3 released version before commit 205c612820dac644d665b5bb1cdf437dc5ca01e3 contains a Other/Unknown vulnerability in channels/drdynvc/client/drdynvc_main.c, drdynvc_process_capability_request that can result in The RDP server can read the client's memory.. This attack appear to be exploitable via RDPClient must connect the rdp server with echo option. This vulnerability appears to have been fixed in after commit 205c612820dac644d665b5bb1cdf437dc5ca01e3.

Weakness: CWE-125

Which versions are affected by CVE-2018-1000852?

It affects 3 products.

Linux distribution packages (24)

`freerdp` Red Hat:enterprise_linux:7::client	All versions	`0:2.0.0-1.rc4.el7`
`freerdp-debuginfo` Red Hat:enterprise_linux:7::client	All versions	`0:2.0.0-1.rc4.el7`
`freerdp-devel` Red Hat:enterprise_linux:7::client	All versions	`0:2.0.0-1.rc4.el7`
`freerdp-libs` Red Hat:enterprise_linux:7::client	All versions	`0:2.0.0-1.rc4.el7`
`libwinpr` Red Hat:enterprise_linux:7::client	All versions	`0:2.0.0-1.rc4.el7`
`libwinpr-devel` Red Hat:enterprise_linux:7::client	All versions	`0:2.0.0-1.rc4.el7`
`vinagre` Red Hat:enterprise_linux:7::client	All versions	`0:3.22.0-12.el7`
`vinagre-debuginfo` Red Hat:enterprise_linux:7::client	All versions	`0:3.22.0-12.el7`
`freerdp` Red Hat:enterprise_linux:7::server	All versions	`0:2.0.0-1.rc4.el7`
`freerdp-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`0:2.0.0-1.rc4.el7`
`freerdp-devel` Red Hat:enterprise_linux:7::server	All versions	`0:2.0.0-1.rc4.el7`
`freerdp-libs` Red Hat:enterprise_linux:7::server	All versions	`0:2.0.0-1.rc4.el7`
`libwinpr` Red Hat:enterprise_linux:7::server	All versions	`0:2.0.0-1.rc4.el7`
`libwinpr-devel` Red Hat:enterprise_linux:7::server	All versions	`0:2.0.0-1.rc4.el7`
`vinagre` Red Hat:enterprise_linux:7::server	All versions	`0:3.22.0-12.el7`
`vinagre-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`0:3.22.0-12.el7`
`freerdp` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.0.0-1.rc4.el7`
`freerdp-debuginfo` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.0.0-1.rc4.el7`
`freerdp-devel` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.0.0-1.rc4.el7`
`freerdp-libs` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.0.0-1.rc4.el7`
`libwinpr` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.0.0-1.rc4.el7`
`libwinpr-devel` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.0.0-1.rc4.el7`
`vinagre` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.22.0-12.el7`
`vinagre-debuginfo` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.22.0-12.el7`

Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Freerdp Freerdp.

How do I fix CVE-2018-1000852?

Apply the vendor's patch.

Is CVE-2018-1000852 being exploited?

There is no known exploitation of CVE-2018-1000852 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-1000852, GHSA-vr2x-32cg-pm8g, RHSA-2019:2157, UBUNTU-CVE-2018-1000852.