9.6 CRITICAL
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): Required (R)
- Scope (S): Changed (C)
- Confidentiality (C): High (H)
- Integrity (I): High (H)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): Required (R)
- Modified Confidentiality (MC): High (H)
- Modified Scope (MS): Changed (C)
- Modified Integrity (MI): High (H)
- Modified Availability (MA): High (H)
by @LeSuisse Activity log
- Created suggestion
- @LeSuisse dismissed (not in Nixpkgs)
OpenWrt odhcpd/LuCI: unauthenticated DHCPv6 client can inject lease-file lines via FQDN hostname → stored XSS in the LuCI admin UI
OpenWrt is a Linux operating system targeting embedded devices. Prior to 25.12.5, odhcpd writes a DHCPv6 client FQDN option 39 hostname into /tmp/odhcpd.leases through src/statefiles.c statefiles_write_state6() and statefiles_write_state4() without escaping, allowing newline injection of forged lease lines that LuCI rpcd-mod-luci getDHCPLeases displays through htdocs/luci-static/resources/view/status/include/40_dhcp.js and htdocs/luci-static/resources/luci.js dom.append as live HTML in the Active DHCPv6 Leases admin page. This vulnerability is fixed in 25.12.5.
References
-
https://github.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535f exploitx_refsource_CONFIRM
-
https://github.com/openwrt/odhcpd/pull/404 x_refsource_MISC
-
https://github.com/openwrt/openwrt/releases/tag/v25.12.5 x_refsource_MISC
Affected products
- ==< 25.12.5
Matching in nixpkgs
pkgs.terraform-providers.openwrt
None
pkgs.python313Packages.openwrt-luci-rpc
Python module for interacting with the OpenWrt Luci RPC interface
pkgs.python313Packages.openwrt-ubus-rpc
Python API for OpenWrt ubus RPC
pkgs.python314Packages.openwrt-luci-rpc
Python module for interacting with the OpenWrt Luci RPC interface
pkgs.python314Packages.openwrt-ubus-rpc
Python API for OpenWrt ubus RPC
Package maintainers
-
@matt-snider Matt Snider <matt.snider@protonmail.com>
-
@fabaff Fabian Affolter <mail@fabian-affolter.ch>