PT-2022-11796 · Ruijie Networks · Ruijie Rg-Ew Series Routers

Minh Khoa · Published 2022-05-04 · Updated 2022-05-12 · CVE-2021-43159

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Ruijie Networks Ruijie RG-EW Series Routers versions up to ReyeeOS 1.55.1915 / EW 3.0(1)B11P55

Description A Remote Code Execution (RCE) issue exists, allowing for potential exploitation. The issue is related to the setSessionTime function in the "/cgi-bin/luci/api/common" API endpoint.

Recommendations For versions up to ReyeeOS 1.55.1915 / EW 3.0(1)B11P55, as a temporary workaround, consider disabling the setSessionTime function until a patch is available. Restrict access to the "/cgi-bin/luci/api/common" API endpoint to minimize the risk of exploitation.

Fix

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

CVE-2021-43159

Affected Products

Ruijie Rg-Ew Series Routers

References · 4

• https://osv.dev/vulnerability/CVE-2021-43159 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-43159 · Security Note
• https://seclists.org/fulldisclosure/2022/May/0 · Note
• http://ruijie.com · Note