EmbedThis Appweb up to 5.2.1 x=/ null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in EmbedThis Appweb up to 5.2.1. It has been declared as critical. Affected by this vulnerability is an unknown code block. The manipulation of the argument x=/ with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

Embedthis Appweb before 4.6.6 and 5.x before 5.2.1 allows remote attackers to cause a denial of service (NULL pointer dereference) via a Range header with an empty value, as demonstrated by "Range: x=,".

The weakness was disclosed 03/31/2015 by Matthew Daley (Website). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2014-9708 since 03/23/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 96314 (Palo Alto Networks PAN-OS Management Interface Remote DoS (PAN-SA-2016-0027)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Denial of Service and running in the context r.

Upgrading to version 4.6.6 eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (96314) and SecurityFocus (BID 73407†).






CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
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Class: Null pointer dereference
CWE: CWE-476 / CWE-404

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 96314
Nessus Name: Palo Alto Networks PAN-OS Management Interface Remote DoS (PAN-SA-2016-0027)
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OpenVAS ID: 100711
OpenVAS Name: Embedthis Appweb Web Server Remote Denial of Service Vulnerability
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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

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Upgrade: Appweb 4.6.6
Patch: github.com


03/23/2015 🔍
03/28/2015 +5 days 🔍
03/31/2015 +3 days 🔍
03/31/2015 +0 days 🔍
04/01/2015 +1 days 🔍
10/31/2016 +579 days 🔍
01/05/2017 +66 days 🔍
05/02/2022 +1943 days 🔍


Advisory: 131157
Researcher: Matthew Daley
Status: Not defined
Confirmation: 🔍

CVE: CVE-2014-9708 (🔍)
SecurityTracker: 1037007
SecurityFocus: 73407 - Appweb CVE-2014-9708 Null Pointer Deference Denial of Service Vulnerability


Created: 04/01/2015 03:04 PM
Updated: 05/02/2022 09:45 AM
Changes: 04/01/2015 03:04 PM (42), 04/15/2018 09:22 AM (27), 05/02/2022 09:45 AM (5)
Complete: 🔍
Cache ID: 44:813:40


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