CVE-2020-35710 Information

Description

Parallels Remote Application Server (RAS) 18 allows remote attackers to discover an intranet IP address because submission of the login form (even with blank credentials) provides this address to the attacker’s client for use as a \host\ value. In other words after an attacker’s web browser sent a request to the login form it would automatically send a second request to a RASHTML5Gateway/socket.io URI with something like \host:\192.168..\ in the POST data.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Reference

https://www.elladodelmal.com/2020/12/blue-team-red-team-como-parallels-ras.html https://twitter.com/amadapa/status/1342407005110218753

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

5.3