Out-of-bounds read in rdesktop - CVE-2018-8798
Published: February 14, 2019 / Updated: May 18, 2020
Vulnerability identifier: #VU17676
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-8798
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The vulnerability exists due to an out-of-bounds read condition in the rdpsnd_process_ping()function. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger segmentation fault (segfault) and access sensitive information on the targeted system.
Affected software
rdesktop
Arch Linux
Gentoo Linux
SUSE Linux
Opensuse
Fedora
rdesktop (Alpine package)
rdesktop
Arch Linux
Gentoo Linux
SUSE Linux
Opensuse
Fedora
rdesktop (Alpine package)
rdesktop
How to mitigate CVE-2018-8798
Update to version 1.8.4.
rdesktop - update to 1.8.4
rdesktop (Alpine package) - update to 1.8.6-r0
rdesktop - addressed in versions 1.8.4-2.fc28, 1.8.4-2.fc29
rdesktop (Alpine package) - update to 1.8.6-r0
rdesktop - addressed in versions 1.8.4-2.fc28, 1.8.4-2.fc29