Sangoma Asterisk up to 16.8-cert5/16.16.0/17.9.1/18.2.0 WebRTC Client res_rtp_asterisk.c stack-based overflow

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

Summaryinfo

A vulnerability labeled as critical has been found in Sangoma Asterisk up to 16.8-cert5/16.16.0/17.9.1/18.2.0. Impacted is an unknown function of the file res_rtp_asterisk.c of the component WebRTC Client Handler. The manipulation results in stack-based overflow. This vulnerability was named CVE-2021-26713. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Sangoma Asterisk up to 16.8-cert5/16.16.0/17.9.1/18.2.0 (Communications System). Affected is an unknown part of the file res_rtp_asterisk.c of the component WebRTC Client Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 02/20/2021. The advisory is shared for download at issues.asterisk.org. This vulnerability is traded as CVE-2021-26713. There are known technical details, but no exploit is available.

Upgrading to version 16.8-cert6, 16.16.1, 17.9.2 or 18.2.1 eliminates this vulnerability. The upgrade is hosted for download at downloads.asterisk.org.

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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: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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: Stack-based overflow
CWE: CWE-121 / CWE-119
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: Asterisk 16.8-cert6/16.16.1/17.9.2/18.2.1

Timelineinfo

02/05/2021 🔍
02/20/2021 +15 days 🔍
02/20/2021 +0 days 🔍
03/03/2021 +11 days 🔍

Sourcesinfo

Advisory: issues.asterisk.org
Status: Confirmed

CVE: CVE-2021-26713 (🔍)
GCVE (CVE): GCVE-0-2021-26713
GCVE (VulDB): GCVE-100-170208

Entryinfo

Created: 02/20/2021 21:37
Updated: 03/03/2021 22:01
Changes: 02/20/2021 21:37 (41), 03/03/2021 21:55 (5), 03/03/2021 22:01 (18)
Complete: 🔍
Cache ID: 216::103

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