ASA-2019-00059 – rdesktop: Several out-of-bounds reads in file secure.c

Posted on by Allele Security Intelligence in Alerts

Allele Security Alert

ASA-2019-00059

Identifier(s)

ASA-2019-00059, CVE-2018-20176

Title

Several out-of-bounds reads in file secure.c

Vendor(s)

rdesktop team

Product(s)

rdesktop

Affected version(s)

rdesktop versions up to and including v1.8.3

Fixed version(s)

rdesktop v1.8.4

Proof of concept

Unknown

Description

rdesktop versions up to and including v1.8.3 contains several out-of-bounds reads in file secure.c that result in a denial of service (segfault).

Technical details

Unknown

Credits

Eyal Itkin (Checkpoint Research)

Reference(s)

Reverse RDP Attack: Code Execution on RDP Clients
https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/

Updated ChangeLog and bumped version to 1.8.4
https://github.com/rdesktop/rdesktop/commit/34b8a18fe5d4de795851defe34b3ad3e1f43532b

CVE-2018-20176
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20176

CVE-2018-20176
https://nvd.nist.gov/vuln/detail/CVE-2018-20176

If there is any error in this alert or you wish a comprehensive analysis, let us know.

Last modified: February 11, 2019

We are not responsible for any data loss, device corruption or any other type of issue due to the use of any information mentioned in our security alerts.