70a4da1ceb
- Security: Avoid privilege escalation via unix stream forwarding in Dropbear server. Other programs on a system may authenticate unix sockets via SO_PEERCRED, which would be root user for Dropbear forwarded connections, allowing root privilege escalation. Reported by Turistu, and thanks for advice on the fix. This is tracked as CVE-2025-14282, and affects 2024.84 to 2025.88. It is fixed by dropping privileges of the dropbear process after authentication. Unix stream sockets are now disallowed when a forced command is used, either with authorized_key restrictions or "dropbear -c command". In previous affected releases running with "dropbear -j" (will also disable TCP fowarding) or building with localoptions.h/distrooptions.h "#define DROPBEAR_SVR_LOCALSTREAMFWD 0" is a mitigation. - Security: Include scp fix for CVE-2019-6111. This allowed a malicious server to overwrite arbitrary local files. The missing fix was reported by Ashish Kunwar. - Server dropping privileges post-auth is enabled by default. This requires setresgid() support, so some platforms such as netbsd or macos will have to disable DROPBEAR_SVR_DROP_PRIVS in localoptions.h. Unix stream forwarding is not available if DROPBEAR_SVR_DROP_PRIVS is disabled. Remote server TCP socket forwarding will now use OS privileged port restrictions rather than having a fixed "allow >=1024 for non-root" rule. A future release may implement privilege dropping for netbsd/macos. - Fix a regression in 2025.87 when RSA and DSS are not built. This would lead to a crash at startup with bad_bufptr(). Reported by Dani Schmitt and Sebastian Priebe. - Don't limit channel window to 500MB. That is could cause stuck connections if peers advise a large window and don't send an increment within 500MB. Affects SSH.NET https://github.com/sshnet/SSH.NET/issues/1671 Reported by Rob Hague. - Ignore -g -s when passwords arent enabled. Patch from Norbert Lange. Ignore -m (disable MOTD), -j/-k (tcp forwarding) when not enabled. - Report SIGBUS and SIGTRAP signals. Patch from Loïc Mangeonjean. - Fix incorrect server auth delay. Was meant to be 250-350ms, it was actually 150-350ms or possibly negative (zero). Reported by pickaxprograms. - Fix building without public key options. Thanks to Konstantin Demin - Fix building with proxycmd but without netcat. Thanks to Konstantin Demin - Fix incorrect path documentation for distrooptions, thanks to Todd Zullinger - Fix SO_REUSEADDR for TCP tests, reported by vt-alt. Dropped: * 050-dropbear-multihop-fix.patch as its included in the release 5cc0127000db5f * 051-fix-pubkey-options.patch as its included in the release 1d4c4a542cd5df * 052-fix-missing-depends-for-sntrup761x25519-sha512.patch as its included in the release 1a2c1e649a1824 * 053-Don-t-limit-channel-window-to-500MB.patch as its included in the release a8610f7b98ad Manually rebased: * 110-change_user.patch Fixes: CVE-2025-14282, CVE-2019-6111 Reviewed-by: Hauke Mehrtens <hauke@hauke-m.de> Reviewed-by: Konstantin Demin <rockdrilla@gmail.com> Tested-by: Konstantin Demin <rockdrilla@gmail.com> [mediatek/filogic (GL.iNet GL-MT6000)] Link: https://github.com/openwrt/openwrt/pull/21186 Signed-off-by: Petr Štetiar <ynezz@true.cz>
OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This frees you from the application selection and configuration provided by the vendor and allows you to customize the device through the use of packages to suit any application. For developers, OpenWrt is the framework to build an application without having to build a complete firmware around it; for users this means the ability for full customization, to use the device in ways never envisioned.
Sunshine!
Download
Built firmware images are available for many architectures and come with a package selection to be used as WiFi home router. To quickly find a factory image usable to migrate from a vendor stock firmware to OpenWrt, try the Firmware Selector.
If your device is supported, please follow the Info link to see install instructions or consult the support resources listed below.
An advanced user may require additional or specific package. (Toolchain, SDK, ...) For everything else than simple firmware download, try the wiki download page:
Development
To build your own firmware you need a GNU/Linux, BSD or macOS system (case sensitive filesystem required). Cygwin is unsupported because of the lack of a case sensitive file system.
Requirements
You need the following tools to compile OpenWrt, the package names vary between distributions. A complete list with distribution specific packages is found in the Build System Setup documentation.
binutils bzip2 diff find flex gawk gcc-6+ getopt grep install libc-dev libz-dev
make4.1+ perl python3.7+ rsync subversion unzip which
Quickstart
-
Run
./scripts/feeds update -ato obtain all the latest package definitions defined in feeds.conf / feeds.conf.default -
Run
./scripts/feeds install -ato install symlinks for all obtained packages into package/feeds/ -
Run
make menuconfigto select your preferred configuration for the toolchain, target system & firmware packages. -
Run
maketo build your firmware. This will download all sources, build the cross-compile toolchain and then cross-compile the GNU/Linux kernel & all chosen applications for your target system.
Related Repositories
The main repository uses multiple sub-repositories to manage packages of
different categories. All packages are installed via the OpenWrt package
manager called opkg. If you're looking to develop the web interface or port
packages to OpenWrt, please find the fitting repository below.
-
LuCI Web Interface: Modern and modular interface to control the device via a web browser.
-
OpenWrt Packages: Community repository of ported packages.
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OpenWrt Routing: Packages specifically focused on (mesh) routing.
-
OpenWrt Video: Packages specifically focused on display servers and clients (Xorg and Wayland).
Support Information
For a list of supported devices see the OpenWrt Hardware Database
Documentation
Support Community
- Forum: For usage, projects, discussions and hardware advise.
- Support Chat: Channel
#openwrton oftc.net.
Developer Community
- Bug Reports: Report bugs in OpenWrt
- Dev Mailing List: Send patches
- Dev Chat: Channel
#openwrt-develon oftc.net.
License
OpenWrt is licensed under GPL-2.0