Out-of-bounds read in rdesktop - CVE-2018-20176
Published: March 18, 2019
Vulnerability identifier: #VU18011
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-20176
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: rdesktop.org
Affected software:
rdesktop
rdesktop
Detailed vulnerability description
The vulnerability allows a remote attacker to perform denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when processing RDP packets in sec_parse_crypt_info() and sec_recv() functionsin secure.cfile. A remote attacker can trick the victim that is using the vulnerable RDP client to connect to malicious RDP server, trigger out-of-bounds read error and perform denial of service attack.
How to mitigate CVE-2018-20176
Install updates from vendor's website.