PT-2022-18982 · Verizon · Verizon 5G Home Lvskihp Outdoorunit

Matthew Lichtenberger + 1 · Published 2022-07-14 · Updated 2022-07-21 · CVE-2022-28373

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Verizon 5G Home LVSKIHP InDoorUnit (IDU) version 3.4.66.162

Description The issue arises from improper sanitization of user-controlled parameters within the crtcreadpartition function of the crtcrpc JSON listener in /usr/lib/lua/luci/crtc.lua. This allows a remote attacker on the local network to inject shell metacharacters, achieving remote code execution as root.

Recommendations For version 3.4.66.162, consider disabling the crtcreadpartition function until a patch is available to prevent remote code execution. Restrict access to the /usr/lib/lua/luci/crtc.lua file to minimize the risk of exploitation. Avoid using user-controlled parameters in the affected JSON listener until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2022-28373

Affected Products

Verizon 5G Home Lvskihp Outdoorunit

References · 6

• 🔥 https://github.com/JousterL/SecWriteups/blob/main/Verizon%20LVSKIHP%205G%20Modem/readme.md · Exploit
• https://osv.dev/vulnerability/CVE-2022-28373 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-28373 · Security Note
• https://verizon.com/info/reportsecurityvulnerability · Vendor Advisory
• https://t.me/cibsecurity/46238 · Telegram Post
• https://t.me/cvenotify/33065 · Telegram Post