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CVE-2020-35710

MEDIUM
5.3
CVSS Score
Published: December 25, 2020 at 06:58 PM UTC
Updated: June 17, 2026 at 03:14 AM UTC
1 product affected across 1 vendorRemote Application Server

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Severity
MEDIUM5.3
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISCThird Party Advisory
Source: [email protected]
https://twitter.com/amadapa/status/1342407005110218753
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://www.elladodelmal.com/2020/12/blue-team-red-team-como-parallels-ras.html

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200

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