Asterisk Connection SIP INVITE Message data processing

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Asterisk. It has been rated as problematic. This affects an unknown part of the component Connection Handler. The manipulation as part of SIP INVITE Message leads to data processing. This vulnerability is uniquely identified as CVE-2018-7286. The attack is possible to be carried out remotely. Moreover, an exploit is present. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Asterisk (Communications System) (version unknown). It has been rated as problematic. This issue affects an unknown function of the component Connection Handler. The manipulation as part of a SIP INVITE Message leads to a data processing vulnerability. Using CWE to declare the problem leads to CWE-19. Impacted is availability. The summary by CVE is:

An issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. res_pjsip allows remote authenticated users to crash Asterisk (segmentation fault) by sending a number of SIP INVITE messages on a TCP or TLS connection and then suddenly closing the connection.

The bug was discovered 02/21/2018. The weakness was disclosed 02/22/2018 (Website). It is possible to read the advisory at downloads.asterisk.org. The identification of this vulnerability is CVE-2018-7286 since 02/21/2018. The exploitation is known to be easy. The attack may be initiated remotely. The successful exploitation requires a simple authentication. Technical details are unknown but a public exploit is available.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. 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 371280 (Asterisk Multiple Vulnerabilities (AST-2018-002, AST-2018-003,AST-2018-004,AST-2018-005)).

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 Exploit-DB (44181), Tenable (107100) and SecurityFocus (BID 103129†). The entries VDB-113685, VDB-113686, VDB-113688 and VDB-114397 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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: 903221
OpenVAS Name: Asterisk Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

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 🔍
11/25/2024 +2460 days 🔍

Sourcesinfo

Advisory: downloads.asterisk.org
Researcher: Sandro Gauci
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-7286 (🔍)
GCVE (CVE): GCVE-0-2018-7286
GCVE (VulDB): GCVE-100-113687

OVAL: 🔍

SecurityFocus: 103129 - Multiple Asterisk Products CVE-2018-7286 Denial of Service Vulnerability
SecurityTracker: 1040417

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 02/22/2018 09:52
Updated: 11/25/2024 03:20
Changes: 02/22/2018 09:52 (73), 01/07/2020 17:46 (9), 02/04/2021 14:38 (3), 02/04/2021 14:42 (1), 11/25/2024 03:20 (15)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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