Cisco Small Business RV110W Web-based Management Interface buffer overflow
|CVSS Meta Temp Score|
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A vulnerability, which was classified as critical, has been found in Cisco Small Business RV110W, Small Business RV130, Small Business RV130W and Small Business RV215W (affected version not known). Affected by this issue is an unknown code of the component Web-based Management Interface. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-120. The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:
Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an authenticated, remote attacker to execute arbitrary code on an affected device or cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. These vulnerabilities are due to insufficient validation of user fields within incoming HTTP packets. An attacker could exploit these vulnerabilities by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to execute arbitrary commands on an affected device with root-level privileges or to cause the device to restart unexpectedly, resulting in a DoS condition. To exploit these vulnerabilities, an attacker would need to have valid Administrator credentials on the affected device. Cisco has not released software updates that address these vulnerabilities.
The weakness was shared 07/22/2022 as cisco-sa-sb-rv-rce-overflow-ygHByAK. The advisory is shared for download at tools.cisco.com. This vulnerability is handled as CVE-2022-20911 since 11/02/2021. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/16/2022).
Upgrading eliminates this vulnerability.
CVSSv3VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5
VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 7.2
NVD Vector: 🔒
CNA Base Score: 4.7
CNA Vector (Cisco Systems, Inc.): 🔒
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
ExploitingClass: Memory corruption
CWE: CWE-120 / CWE-119
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
Threat IntelligenceInterest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍
0-Day Time: 🔒
Timeline11/02/2021 CVE reserved
07/22/2022 +261 days Advisory disclosed
07/22/2022 +0 days VulDB entry created
08/16/2022 +25 days VulDB last update
CVE: CVE-2022-20911 (🔒)
EntryCreated: 07/22/2022 07:45 AM
Updated: 08/16/2022 05:57 PM
Changes: (11) vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore vulnerability_cvss3_nvd_basescore vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a
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