Cisco Small Business RV110W Web-based Management Interface buffer overflow
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
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4.5 | $0-$5k | 0.00 |
A vulnerability was found in Cisco Small Business RV110W, Small Business RV130, Small Business RV130W and Small Business RV215W (unknown version). It has been declared as critical. Affected by this vulnerability is an unknown code block of the component Web-based Management Interface. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
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 released 07/22/2022 as cisco-sa-sb-rv-rce-overflow-ygHByAK. It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2022-20893 since 11/02/2021. The technical details are unknown and an exploit is not publicly available.
Upgrading eliminates this vulnerability.
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CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 4.7VulDB Meta Temp Score: 4.5
VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
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CVSSv2
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VulDB Base Score: 🔍
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Exploiting
Class: Buffer overflowCWE: CWE-120 / CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
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Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
11/02/2021 🔍07/22/2022 🔍
07/22/2022 🔍
07/22/2022 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-sb-rv-rce-overflow-ygHByAK
Status: Confirmed
CVE: CVE-2022-20893 (🔍)
Entry
Created: 07/22/2022 07:36Changes: 07/22/2022 07:36 (39)
Complete: 🔍
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