[Pkg-utopia-maintainers] Bug#891413: Bug#891413: network-manager-pptp: PPTP connections fail on Authentication

[Michael Biebl]

Am 25.02.2018 um 12:30 schrieb Adam Hough:
> Package: network-manager-pptp
> Version: 1.2.4-5+b1
> Severity: grave
> Justification: renders package unusable
> 
> Dear Maintainer,
> 
>    * What led up to the situation?
> 
> I did a normal apt upgrade which updated network-manager-pptp,
> network-manager, ppp, and pptp-linux to the latest testing versions as
> of 24Feb2018. This caused my PPTP vpn connection to fail to connect
> because of authentication issues with the MSCHAP and MSCHAPv2 protocals.
> 
> Feb 25 02:10:11 localhost pppd[31955]: Plugin
> /usr/lib/pppd/2.4.7/nm-pptp-pppd-plugin.so loaded.
> Feb 25 02:10:11 localhost NetworkManager[16904]: Plugin
> /usr/lib/pppd/2.4.7/nm-pptp-pppd-plugin.so loaded.
> Feb 25 02:10:11 localhost pppd[31955]: pppd 2.4.7 started by root, uid 0
> Feb 25 02:10:11 localhost systemd-udevd[31959]: link_config:
> autonegotiation is unset or enabled, the speed and duplex are not writable.
> Feb 25 02:10:11 localhost NetworkManager[16904]: <info> 
> [1519553411.5971] manager: (ppp0): new Ppp device
> (/org/freedesktop/NetworkManager/Devices/6)
> Feb 25 02:10:11 localhost pppd[31955]: Using interface ppp0
> Feb 25 02:10:11 localhost NetworkManager[16904]: Using interface ppp0
> Feb 25 02:10:11 localhost NetworkManager[16904]: Connect: ppp0 <-->
> /dev/pts/7
> Feb 25 02:10:11 localhost pppd[31955]: Connect: ppp0 <--> /dev/pts/7
> Feb 25 02:10:11 localhost pptp[31960]: nm-pptp-service-31951
> log[main:pptp.c:353]: The synchronous pptp option is NOT activated
> Feb 25 02:10:11 localhost NetworkManager[16904]: Error: either "to" is
> duplicate, or "uid" is a garbage.
> Feb 25 02:10:11 localhost NetworkManager[16904]: <info> 
> [1519553411.6134] devices added (path: /sys/devices/virtual/net/ppp0,
> iface: ppp0)
> Feb 25 02:10:11 localhost NetworkManager[16904]: <info> 
> [1519553411.6134] device added (path: /sys/devices/virtual/net/ppp0,
> iface: ppp0): no ifupdown configuration found.
> Feb 25 02:10:11 localhost pptp[32023]: nm-pptp-service-31951
> log[ctrlp_rep:pptp_ctrl.c:259]: Sent control packet type is 1
> 'Start-Control-Connection-Request'
> Feb 25 02:10:11 localhost pptp[32023]: nm-pptp-service-31951
> log[ctrlp_disp:pptp_ctrl.c:781]: Received Start Control Connection Reply
> Feb 25 02:10:11 localhost pptp[32023]: nm-pptp-service-31951
> log[ctrlp_disp:pptp_ctrl.c:815]: Client connection established.
> Feb 25 02:10:12 localhost pptp[32023]: nm-pptp-service-31951
> log[ctrlp_rep:pptp_ctrl.c:259]: Sent control packet type is 7
> 'Outgoing-Call-Request'
> Feb 25 02:10:12 localhost pptp[32023]: nm-pptp-service-31951
> log[ctrlp_disp:pptp_ctrl.c:900]: Received Outgoing Call Reply.
> Feb 25 02:10:12 localhost pptp[32023]: nm-pptp-service-31951
> log[ctrlp_disp:pptp_ctrl.c:939]: Outgoing call established (call ID
> 62435, peer's call ID 51712).
> Feb 25 02:10:13 localhost pppd[31955]: MS-CHAP authentication failed:
> Feb 25 02:10:13 localhost NetworkManager[16904]: MS-CHAP authentication
> failed:
> Feb 25 02:10:13 localhost NetworkManager[16904]: CHAP authentication failed
> Feb 25 02:10:13 localhost pppd[31955]: CHAP authentication failed
> Feb 25 02:10:13 localhost pppd[31955]: Connection terminated.
> Feb 25 02:10:13 localhost NetworkManager[16904]: Connection terminated.
> Feb 25 02:10:13 localhost charon-nm[31069]: 13[KNL] interface ppp0 deleted
> 
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?
> 
> Downgrading just pptp-linux was not effective so I also downgraded the
> following packages as well to get ppp to version 2.7.4-1+4:
> gir1.2-nma-1.0 libnma0 network-manager network-manager-gnome
> network-manager-pptp network-manager-pptp-gnome ppp pptp-linux pptpd
> 
>    * What was the outcome of this action?
> 
> After downgrading the packages, The PPTP base vpn connection is working.
> 
>    * What outcome did you expect instead?
> 
> I would have expected that the upgrade would not have broken MSCHAP and
> MSCHAPv2 authenthication.
> 
> 
> -- System Information:
> Debian Release: buster/sid
>   APT prefers stable-updates
>   APT policy: (500, 'stable-updates'), (500, 'testing'), (500, 'stable')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 4.14.0-3-amd64 (SMP w/4 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
> LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
> LSM: AppArmor: enabled
> 
> Versions of packages network-manager-pptp depends on:
> ii  libc6            2.26-6
> ii  libglib2.0-0     2.54.3-2
> ii  libnm0           1.10.4-1+b1
> ii  network-manager  1.10.4-1
> ii  ppp              2.4.7-2+1

There weren't any code changes in 1.2.4-5+b1 only a recompilation
against ppp 2.4.7-2+1. I've thus CCed the ppp maintainers.
Maybe they can have a look.


-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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