[Pkg-auth-maintainers] Bug#783395: libpam-yubico: Segfault when using Yubikey for authentication prevents login

[Henrik Størner]

Package: libpam-yubico
Version: 2.17-2
Severity: important

Dear Maintainer,

After upgrading from Wheezy to Jessie, Yubikey authentication has stoppped working.

Yubikey authentication was disabled during the upgrade, in case I had to login 
without network access. After the upgrade I ran "dpkg-reconfigure libpam-yubico"
to configure for the Yubico 2-factor authentication. Now, when logging in I do
get the "YubiKey" prompt, but when hitting the Yubikey I am immediately returned
to the login: prompt.

/var/log/syslog has this:
Apr 26 12:55:41 osiris kernel: [ 2717.882751] login[13942]: segfault at 7f6627ae2030 ip 00007f6626f67d28 sp 00007f661cc1b538 error 4 in libc-2.19.so[7f6626ee3000+19f000]

The libpam-yubico configuration is
  mode=client try_first_pass id=N key=X

(N and X taken from my previous configuration)


-- System Information:
Debian Release: 8.0
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=da_DK.UTF-8, LC_CTYPE=da_DK.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libpam-yubico depends on:
ii  debconf [debconf-2.0]  1.5.56
ii  libc6                  2.19-18
ii  libldap-2.4-2          2.4.40+dfsg-1
ii  libpam-runtime         1.1.8-3.1
ii  libpam0g               1.1.8-3.1
ii  libykclient3           2.13-1
ii  libykpers-1-1          1.16.0-1
ii  libyubikey0            1.12-2

libpam-yubico recommends no packages.

libpam-yubico suggests no packages.