PT-2021-1935 · Cisco · Cisco Small Business Rv160+4

T. Shiomitsu · Published 2021-02-03 · Updated 2022-08-05 · CVE-2021-1296

Positive Technologies (AI Summary)

CVSS v2.0

9.4

High

Base vector

AV:N/AC:L/Au:N/C:N/I:C/A:C

Name of the Vulnerable Software and Affected Versions Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers (affected versions not specified)

Description The issue is related to insufficient input validation in the web-based management interface of the affected devices, allowing an unauthenticated, remote attacker to conduct directory traversal attacks and overwrite certain files that should be restricted on an affected system. An attacker could exploit this by using the web-based management interface to upload a file to a location on an affected device that they should not have access to, potentially overwriting files on the file system of the affected device.

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

Path traversal

Weakness Enumeration

CWE-36

CWE-22

Related Identifiers

BDU:2021-00739

CVE-2021-1296

ZDI-21-134

Affected Products

Cisco Small Business Rv160

Cisco Small Business Rv160W

Cisco Small Business Rv260

Cisco Small Business Rv260P

Cisco Small Business Rv260W

References · 7

• https://bdu.fstec.ru/vul/2021-00739 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-134 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-1296 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv160-260-filewrite-7x9mnKjn · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-1296 · Vendor Advisory
• https://t.me/cvenotify/9597 · Telegram Post
• https://t.me/true_secator/1403 · Telegram Post