Asterisk Open Source up to 15.4.0 TCP TLS improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Asterisk Open Source up to 15.4.0. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the component TCP TLS. This manipulation causes improper authentication. This vulnerability appears as CVE-2018-12228. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Asterisk Open Source up to 15.4.0 (Communications System). It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component TCP TLS. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect availability. The summary by CVE is:

An issue was discovered in Asterisk Open Source 15.x before 15.4.1. When connected to Asterisk via TCP/TLS, if the client abruptly disconnects, or sends a specially crafted message, then Asterisk gets caught in an infinite loop while trying to read the data stream. This renders the system unusable.

The bug was discovered 06/12/2018. The weakness was presented 06/12/2018 by Sean (Website). It is possible to read the advisory at downloads.asterisk.org. This vulnerability is known as CVE-2018-12228 since 06/11/2018. The exploitation appears to be easy. The attack can be launched remotely. The requirement for exploitation is a single authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 110561 (Asterisk 15.x < 15.4.1 Multiple Vulnerabilities (AST-2018-007 - AST-2018-008)), 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 371281 (Asterisk Open Source Denial of Service Vulnerability (AST-2018-007)).

Upgrading to version 15.4.1 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 (110561) and SecurityFocus (BID 104457†). See VDB-119382 for similar entry. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Vendor

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
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: 110561
Nessus Name: Asterisk 15.x < 15.4.1 Multiple Vulnerabilities (AST-2018-007 - AST-2018-008)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Open Source 15.4.1

Timelineinfo

06/11/2018 🔍
06/11/2018 +0 days 🔍
06/11/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/15/2018 +3 days 🔍
08/15/2024 +2253 days 🔍

Sourcesinfo

Advisory: downloads.asterisk.org
Researcher: Sean
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-12228 (🔍)
GCVE (CVE): GCVE-0-2018-12228
GCVE (VulDB): GCVE-100-119383
SecurityFocus: 104457 - Asterisk Open Source CVE-2018-12228 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 06/12/2018 21:44
Updated: 08/15/2024 16:37
Changes: 06/12/2018 21:44 (74), 02/18/2020 11:34 (6), 08/15/2024 16:37 (28)
Complete: 🔍
Cache ID: 216::103

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

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