Appweb up to 7.2.1/8.0.x CGI Support Range null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Appweb up to 7.2.1/8.0.x. Affected by this vulnerability is an unknown functionality of the component CGI Support. The manipulation of the argument Range as part of HTTP Request results in null pointer dereference. This vulnerability is reported as CVE-2020-15689. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Appweb up to 7.2.1/8.0.x. Affected is an unknown functionality of the component CGI Support. The manipulation of the argument Range as part of a HTTP Request leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

Appweb before 7.2.2 and 8.x before 8.1.0, when built with CGI support, mishandles an HTTP request with a Range header that lacks an exact range. This may result in a NULL pointer dereference and cause a denial of service.

The weakness was disclosed 07/13/2020 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2020-15689 since 07/13/2020. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

Upgrading to version 7.2.2 or 8.1.0 eliminates this vulnerability.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Appweb 7.2.2/8.1.0

Timelineinfo

07/13/2020 🔍
07/13/2020 +0 days 🔍
07/14/2020 +1 days 🔍
10/29/2020 +107 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-15689 (🔍)
GCVE (CVE): GCVE-0-2020-15689
GCVE (VulDB): GCVE-100-157872

Entryinfo

Created: 07/14/2020 07:40
Updated: 10/29/2020 13:32
Changes: 07/14/2020 07:40 (40), 07/14/2020 07:45 (17), 10/29/2020 13:32 (1)
Complete: 🔍
Cache ID: 216::103

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