FS#4044 - Failed to change the system password

[openwrt-bot]

slava:

I can't change the root password via LuCI on LuCI openwrt-21.02 branch (git-21.231.26241-422c175) / OpenWrt 21.02.0 r16279-5cc0535800
The router is ASUS RT-AC68U.

I can change the root password from the console using passwd but then I can't login to LuCI using the new password.

The problem is that it used to work. Could it be a conflict with some packages I installed?

See the screenshot and the list of packages attached.

[openwrt-bot]

slava:

Removing of shadow and shadow-passwd fixed the problem.

Looks like that LuCI used passwd from the package "shadow". Could you fix this issue and let LuCI to use the correct passwd executable?

[openwrt-bot]

Golffies:

We can confirm the bug Viacheslav reported.

Our version of LuCI is git-21.252.54297-fc2ff4d
Our router is a Turris Omnia with TurrisOS 5.2.7

[openwrt-bot]

jow-:

LuCI has been patched to explicitly invoke Busybox "passwd" with https://git.openwrt.org/22e2bfb0, see also openwrt/luci#5629.

The "shadow-passwd" <> "musl crypt()" incompatibility needs to be separately addressed in the shadow-tools package though, ideally by honoring CONFIG_MUSL_DISABLE_CRYPT_SIZE_HACK, if the hack is not disabled, shadow-passwd may not use Blowfish or SHA ciphers, but only MD5.