PT-2023-28838 · Telstra · Telstra Smart Modem Gen 2

Evan Grant · Published 2023-09-20 · Updated 2024-09-21 · CVE-2023-43478

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 Telstra Smart Modem Gen 2 (Arcadyan LH1000) versions prior to 0.18.15r

Description The issue allows unauthenticated attackers to upload firmware images and configuration backups, potentially leading to code execution as root. This could enable attackers to alter the firmware or configuration on the device.

Recommendations For versions prior to 0.18.15r, update the firmware to version 0.18.15r or later to resolve the issue. As a temporary workaround, consider restricting access to the fake upload.cgi script until a patch is available.

Exploit

Fix

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2023-43478

Affected Products

Telstra Smart Modem Gen 2

References · 7

• 🔥 https://tenable.com/security/research/tra-2023-19 · Exploit
• https://osv.dev/vulnerability/CVE-2023-43478 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-43478 · Security Note
• https://twitter.com/rst_cloud/status/1837592655687004560 · Twitter Post
• https://twitter.com/CVEnew/status/1704490238981378412 · Twitter Post
• https://twitter.com/cracbot/status/1704737288687919328 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1704543965632938274 · Twitter Post