Asterisk PBX up to 18.0.0 SIP Invite res_pjsip_session denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Asterisk PBX up to 13.37.0/16.8-cert/16.14.0/17.8.0/18.0.0. It has been classified as problematic. Impacted is the function res_pjsip_session of the component SIP Invite Handler. The manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2020-28327. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Asterisk PBX up to 13.37.0/16.8-cert/16.14.0/17.8.0/18.0.0 (Communications System). This issue affects the function res_pjsip_session of the component SIP Invite Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was disclosed 11/07/2020 as AST-2020-001. The advisory is shared at downloads.asterisk.org. The identification of this vulnerability is CVE-2020-28327. The attack may be initiated remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 13.37.1, 16.8-cert, 16.14.1, 17.8.1 or 18.0.1 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

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

NVD Base Score: 5.3
NVD 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: Denial of service
CWE: 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: PBX 13.37.1/16.8-cert/16.14.1/17.8.1/18.0.1

Timelineinfo

11/06/2020 🔍
11/07/2020 +1 days 🔍
11/07/2020 +0 days 🔍
08/15/2024 +1377 days 🔍

Sourcesinfo

Advisory: AST-2020-001
Status: Confirmed

CVE: CVE-2020-28327 (🔍)
GCVE (CVE): GCVE-0-2020-28327
GCVE (VulDB): GCVE-100-164477

Entryinfo

Created: 11/07/2020 07:09
Updated: 08/15/2024 16:37
Changes: 11/07/2020 07:09 (41), 12/03/2020 16:16 (2), 12/03/2020 16:19 (18), 08/15/2024 16:37 (16)
Complete: 🔍
Cache ID: 216::103

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