PT-2022-2293 · Cisco · Cisco Small Business Rv345+3

Stephen Fewer · Published 2022-02-02 · Updated 2022-02-17 · CVE-2022-20712

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers (affected versions not specified)

Description The issue allows an attacker to execute arbitrary code, elevate privileges, execute arbitrary commands, bypass authentication and authorization protections, fetch and run unsigned software, or cause denial of service (DoS). This is caused by a buffer overflow in the firmware loading module of the affected routers. Exploitation can occur through sending a specially crafted HTTP request.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Corruption

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-787

CWE-121

CWE-119

Related Identifiers

BDU:2022-02477

CVE-2022-20712

Affected Products

Cisco Small Business Rv160

Cisco Small Business Rv260

Cisco Small Business Rv340

Cisco Small Business Rv345

References · 7

• https://osv.dev/vulnerability/CVE-2022-20712 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-02477 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-20712 · Security Note
• https://t.me/cibsecurity/37241 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2022020302 · Note
• https://t.me/cvenotify/26590 · Telegram Post