Asterisk HTTP Server res_http_websocket.c Size 0 data processing

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Asterisk. This vulnerability affects unknown code of the file res_http_websocket.c of the component HTTP Server. The manipulation as part of Size 0 results in data processing. This vulnerability was named CVE-2018-7287. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Asterisk (Communications System) (affected version unknown). Affected is an unknown functionality of the file res_http_websocket.c of the component HTTP Server. The manipulation as part of a Size 0 leads to a data processing vulnerability. CWE is classifying the issue as CWE-19. This is going to have an impact on availability. CVE summarizes:

An issue was discovered in res_http_websocket.c in Asterisk 15.x through 15.2.1. If the HTTP server is enabled (default is disabled), WebSocket payloads of size 0 are mishandled (with a busy loop).

The bug was discovered 02/21/2018. The weakness was presented 02/22/2018 by Sean (Website). The advisory is shared for download at downloads.digium.com. This vulnerability is traded as CVE-2018-7287 since 02/21/2018. 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.

The vulnerability scanner Nessus provides a plugin with the ID 107100 (Asterisk 15.x < 15.2.2 Multiple Vulnerabilities (AST-2018-001 - AST-2018-006)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371279 (Asterisk Multiple Vulnerabilities (AST-2018-001, AST-2018-006)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (107100) and SecurityFocus (BID 103120†). See VDB-113685, VDB-113686 and VDB-113687 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Data processing
CWE: CWE-19
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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Nessus ID: 107100
Nessus Name: Asterisk 15.x < 15.2.2 Multiple Vulnerabilities (AST-2018-001 - AST-2018-006)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53327
OpenVAS Name: Asterisk Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/21/2018 🔍
02/21/2018 +0 days 🔍
02/21/2018 +0 days 🔍
02/21/2018 +0 days 🔍
02/21/2018 +0 days 🔍
02/22/2018 +1 days 🔍
02/22/2018 +0 days 🔍
03/02/2018 +8 days 🔍
02/04/2021 +1070 days 🔍

Sourcesinfo

Advisory: downloads.digium.com
Researcher: Sean Bright (Sean)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-7287 (🔍)
GCVE (CVE): GCVE-0-2018-7287
GCVE (VulDB): GCVE-100-113688
SecurityFocus: 103120 - Asterisk Open Source CVE-2018-7287 Denial of Service Vulnerability
SecurityTracker: 1040419

See also: 🔍

Entryinfo

Created: 02/22/2018 09:53
Updated: 02/04/2021 14:54
Changes: 02/22/2018 09:53 (72), 01/07/2020 17:51 (7), 02/04/2021 14:48 (2), 02/04/2021 14:54 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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