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Description
Cudy TR3000 before 2.5.42 contains an option injection vulnerability that allows authenticated administrators to inject arbitrary pppd options by embedding quotes and newlines in L2TP credentials. Attackers can submit crafted usernames or passwords to the net.set_wan RPC method, which l2tp.sh writes into a pppd options file, adding options like logfile to the root pppd process.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Shenzhen Cudy Technology Co., Ltd. TR3000 1.0
Default version status: unaffected
0 to < 2.5.42affected2.5.42unaffected
References
- https://www.cudy.com/en-us/pages/download-center/tr3000-1-0 ↗
- https://d1jvyy13vm72kv.cloudfront.net/device/upgrade/m_upgrade_TR3000_256MB_Flash-R103-2.5.42-20261103-160202-sysupgrade_82672.zip ↗
- https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-pppd-option-injection-via-net-set-wan-l2tp-credentials ↗