Cisco Small Business RV Series Router Web-based Management Interface memory corruption

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CVSS Meta Temp Score
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CTI Interest Score
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7.0$5k-$25k1.05

A vulnerability, which was classified as critical, was found in Cisco Small Business RV Series Router (Router Operating System) (the affected version unknown). This affects an unknown function of the component Web-based Management Interface. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business RV Series Routers. A remote attacker could execute arbitrary commands or bypass authentication and upload files on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

The weakness was released 04/08/2021 as cisco-sa-sb-rv-bypass-inject-Rbhgvfdx. The advisory is shared at tools.cisco.com. This vulnerability is uniquely identified as CVE-2021-1473 since 11/13/2020. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/11/2021).

Upgrading eliminates this vulnerability.

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CVSSv3infoedit

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

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

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfoedit

11/13/2020 CVE assigned
04/08/2021 +145 days Advisory disclosed
04/08/2021 +0 days VulDB entry created
04/11/2021 +3 days VulDB last update

Sourcesinfoedit

Vendor: https://www.cisco.com/

Advisory: cisco-sa-sb-rv-bypass-inject-Rbhgvfdx
Status: Confirmed

CVE: CVE-2021-1473 (🔒)

Entryinfoedit

Created: 04/08/2021 11:03 AM
Updated: 04/11/2021 09:04 PM
Changes: (1) source_cve_cna
Complete: 🔍

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