Allele Security Alert
ASA-2019-00050
Identifier(s)
ASA-2019-00050, CVE-2018-8794
Title
Integer overflow that leads to an out-of-bounds write in function process_bitmap_updates()
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 contain an integer overflow that leads to an out-of-bounds write in function process_bitmap_updates() and results in a memory corruption and possibly even a remote code execution.
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-2018-8794
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8794
CVE-2018-8794
https://nvd.nist.gov/vuln/detail/CVE-2018-8794
If there is any error in this alert or you wish a comprehensive analysis, let us know.
Last modified: February 11, 2019