Helix RealServer Remote Integer Handling DoS

high Nessus Network Monitor Plugin ID 2357

Synopsis

The remote host is vulnerable to a Denial of Service (DoS) attack.

Description

RealServer versions 9.0.4.958 and prior as well as 10.3.1.716 and prior are vulnerable to a remote Denial of Service (DoS) attack when they are presented with an invalid (negative) integer for the Content-Length field. An attacker exploiting this flaw would need to be able to connect to the RealServer (default port 554) and issue a malformed request. A successful attack would consume large amounts of memory on the RealServer, eventually ending in the unavailability of the server.

Solution

Upgrade to version 9.0.4.960, 10.3.1.718 or higher.

Plugin Details

Severity: High

ID: 2357

Family: Web Servers

Published: 10/7/2004

Updated: 3/6/2019

Nessus ID: 15438

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:H/RL:U/RC:C

Vulnerability Information

CPE: cpe:/a:realnetworks:helix_universal_server

Reference Information

CVE: CVE-2004-0774

BID: 11352

Detections

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