PT-2021-2490 · Openwrt · Openwrt

Jussi Rämo · Published 2021-03-21 · Updated 2023-05-24 · CVE-2021-28961

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: OpenWrt 19.07

Description: The issue is related to the DDNS package in OpenWrt 19.07, where the detail.lua file allows remote authenticated users to inject arbitrary commands via POST requests to the /cgi-bin/luci API endpoint, specifically the detail.lua script. This could potentially impact the confidentiality, integrity, and availability of protected information.

Recommendations: For OpenWrt 19.07, consider disabling the detail.lua script in the DDNS package as a temporary workaround until a patch is available. Restrict access to the DDNS package to minimize the risk of exploitation. Avoid using the DDNS package until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Command Injection

OS Command Injection

Weakness Enumeration

CWE-77

CWE-78

Related Identifiers

BDU:2021-01866

CVE-2021-28961

Affected Products

Openwrt

References · 11

• https://github.com/openwrt/luci/commit/9df7ea4d66644df69fcea18b36bc465912ffc · Patch
• https://openwrt.org/advisory/2021-08-01-3 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28961 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28961 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01866 · Security Note
• https://t.me/cvenotify/11987 · Telegram Post
• https://t.me/cvenotify/20980 · Telegram Post
• https://t.me/cvenotify/11677 · Telegram Post
• https://t.me/cvenotify/51049 · Telegram Post
• https://t.me/cibsecurity/25213 · Telegram Post
• https://t.me/cvenotify/19215 · Telegram Post