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Description
Cudy TR3000 before 2.5.42 contains a dnsmasq configuration injection vulnerability that allows authenticated administrators to inject directives by embedding a newline in the net.set_dhcp leasetime field. Attackers can append address= entries via /etc/init.d/dnsmasq to alter DNS answers for LAN clients, or insert invalid lines that stop dnsmasq.
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-dnsmasq-configuration-injection-via-net-set-dhcp ↗