Cisco IP Phone Web Server HTTP Requests input validation

CVSS Meta Temp Score
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IP Phone. It has been declared as critical. This affects an unknown function of the component Web Server. The manipulation as part of HTTP Requests results in input validation. This vulnerability is known as CVE-2020-3161. It is possible to launch the attack remotely. Furthermore, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Cisco IP Phone (IP Phone Software) (version now known). Affected is some unknown processing of the component Web Server. The manipulation as part of a HTTP Requests leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the web server for Cisco IP Phones could allow an unauthenticated, remote attacker to execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. The vulnerability is due to a lack of proper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web server of a targeted device. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a DoS condition.

The weakness was published 04/15/2020 as cisco-sa-voip-phones-rce-dos-r as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2020-3161 since 12/12/2019. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

The exploit is shared for download at exploit-db.com. It is declared as attacked. As 0-day the estimated underground price was around $5k-$25k. This issue was added on 11/03/2021 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 05/03/2022:

Apply updates per vendor instructions.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (48342). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector (Cisco Systems, Inc.): 🔍

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: 🔍
Access: Public
Status: Attacked
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/12/2019 🔍
04/15/2020 +125 days 🔍
04/16/2020 +1 days 🔍
02/24/2025 +1775 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-voip-phones-rce-dos-r
Status: Confirmed

CVE: CVE-2020-3161 (🔍)
GCVE (CVE): GCVE-0-2020-3161
GCVE (VulDB): GCVE-100-153810
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/16/2020 13:50
Updated: 02/24/2025 20:31
Changes: 04/16/2020 13:50 (41), 04/16/2020 13:55 (12), 04/20/2024 05:57 (27), 05/27/2024 10:11 (19), 06/20/2024 21:18 (3), 09/09/2024 22:29 (2), 02/24/2025 20:31 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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