Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ppp (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1890814
Title:
Handle PPP non-compliant success packets
Status in ppp package in Ubuntu:
Confirmed
Status in ppp package in Debian:
Unknown
Bug description:
[Impact]
According to RFC2759, the format of PPP success packets is :
"S=<auth_string> M=<message>"
Recently Windows Server 2019 has started producing non-complaint PPP
success packets which have a space missing before the M= characters.
PPP based (e.g. PPTP, L2TP, etc) VPN clients connecting to an affected
Windows Server 2019 VPN server will get the following error message
during MS-CHAPv2 authentication :
MS-CHAPv2 Success packet is badly formed
If the following upstream ppp patch is applied, it will handle the
non-compliant, missing-space before M= success packets :
https://github.com/paulusmack/ppp/commit/3cd95baf3f1de1d5a9bc89be0f4c3215ceb5aefe.patch
To manage notifications about this bug go to:
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