Digium Asterisk up to 13.17.0/14.6.0 PJSIP Channel Driver Header input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Digium Asterisk up to 13.17.0/14.6.0. This issue affects some unknown processing of the component PJSIP Channel Driver. Such manipulation as part of Header leads to input validation. This vulnerability is listed as CVE-2017-14098. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Digium Asterisk up to 13.17.0/14.6.0 (Communications System) and classified as problematic. Affected by this issue is an unknown part of the component PJSIP Channel Driver. The manipulation as part of a Header leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

In the pjsip channel driver (res_pjsip) in Asterisk 13.x before 13.17.1 and 14.x before 14.6.1, a carefully crafted tel URI in a From, To, or Contact header could cause Asterisk to crash.

The bug was discovered 08/30/2017. The weakness was presented 09/02/2017 (Website). The advisory is shared for download at securitytracker.com. This vulnerability is handled as CVE-2017-14098 since 08/31/2017. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102958 (Asterisk 11.x < 11.25.2 / 11.6 < 11.6-cert17 / 13.x < 13.17.1 / 14.x < 14.6.1 / 13.13 < 13.13-cert5 Multiple Vulnerabilities (AST-2017-005 - AST-2017-007)), 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.

Upgrading to version 13.17.1 or 14.6.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (102958), SecurityFocus (BID 100583†) and SecurityTracker (ID 1039253†). See VDB-106089 and VDB-106090 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Input validation
CWE: CWE-20
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: 102958
Nessus Name: Asterisk 11.x < 11.25.2 / 11.6 < 11.6-cert17 / 13.x < 13.17.1 / 14.x < 14.6.1 / 13.13 < 13.13-cert5 Multiple Vulnerabilities (AST-2017-005 - AST-2017-007)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103497
OpenVAS Name: Asterisk DoS Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Asterisk 13.17.1/14.6.1

Timelineinfo

08/30/2017 🔍
08/31/2017 +1 days 🔍
08/31/2017 +0 days 🔍
09/01/2017 +1 days 🔍
09/02/2017 +1 days 🔍
09/02/2017 +0 days 🔍
09/03/2017 +1 days 🔍
09/05/2017 +2 days 🔍
01/10/2021 +1223 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: securitytracker.com⛔
Researcher: Ross Beer
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-14098 (🔍)
GCVE (CVE): GCVE-0-2017-14098
GCVE (VulDB): GCVE-100-106088
SecurityFocus: 100583 - Asterisk Open Source CVE-2017-14098 Denial of Service Vulnerability
SecurityTracker: 1039253

See also: 🔍

Entryinfo

Created: 09/03/2017 17:16
Updated: 01/10/2021 15:55
Changes: 09/03/2017 17:16 (79), 12/17/2019 15:49 (3), 01/10/2021 15:55 (3)
Complete: 🔍
Cache ID: 216::103

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