Ubuntu
pkcs11-helper package

OpenVPN connection fails with smartcard provided private key; please update pkcs11-helper

Bug #1970943 reported by Lorenz Schwittmann
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
pkcs11-helper (Ubuntu)
Fix Released
High
Unassigned
Jammy
Fix Released
Undecided
Unassigned

Bug Description

* Impact

When using an openvpn configuration which uses a smartcard based authentication via "pkcs11-id" and "pkcs11-providers" the connection fails

* Test case

Try to connect to a server using OpenVPN with smartcard authentification

* Regression potential

libpkcs11-helper1 is only used by openvpn in the archive so focus the testing on openvpn + smartcards setups

-----------------------------------

Ubuntu 22.04 LTS

2022-04-29 14:07:18 OpenVPN 2.5.5 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Mar 22 2022
2022-04-29 14:07:18 library versions: OpenSSL 3.0.2 15 Mar 2022, LZO 2.10
2022-04-29 14:07:18 PKCS#11: Adding PKCS#11 provider '/usr/lib/x86_64-linux-gnu/opensc-pkcs11.so'
2022-04-29 14:07:19 TCP/UDP: Preserving recently used remote address: [AF_INET6]XXXXXXXXXXXXX:1194
2022-04-29 14:07:19 Socket Buffers: R=[212992->212992] S=[212992->212992]
2022-04-29 14:07:19 UDP link local: (not bound)
2022-04-29 14:07:19 UDP link remote: [AF_INET6]XXXXXXXXXXXXX:1194
2022-04-29 14:07:19 TLS: Initial packet from [AF_INET6]XXXXXXXXXXXXX:1194, sid=xxxxx xxxx
2022-04-29 14:07:19 VERIFY OK: depth=1, CN=xxxxxxxxxxxx
2022-04-29 14:07:19 VERIFY KU OK
2022-04-29 14:07:19 Validating certificate extended key usage
2022-04-29 14:07:19 ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
2022-04-29 14:07:19 VERIFY EKU OK
2022-04-29 14:07:19 VERIFY OK: depth=0, CN=xxxxxxxxxxxxx
2022-04-29 14:07:19 OpenSSL: error:020000B3:rsa routines::missing private key
2022-04-29 14:07:19 OpenSSL: error:1C880004:Provider routines::RSA lib
2022-04-29 14:07:19 OpenSSL: error:0A080006:SSL routines::EVP lib
2022-04-29 14:07:19 TLS_ERROR: BIO read tls_read_plaintext error
2022-04-29 14:07:19 TLS Error: TLS object -> incoming plaintext read error
2022-04-29 14:07:19 TLS Error: TLS handshake failed
2022-04-29 14:07:19 SIGUSR1[soft,tls-error] received, process restarting
2022-04-29 14:07:19 Restart pause, 5 second(s)

The same problem has been reported upstream at https://github.com/OpenSC/pkcs11-helper/issues/52 which resulted in a fix.

I've downloaded and built pkcs11-helper version 1.29.0 and it fixed the problem indeed.

TLDR: please update pkcs11-helper

See original description
Lorenz Schwittmann (lorenz-schwittmann)
affects: file (Ubuntu) → pkcs11-helper (Ubuntu)
Revision history for this message
Eric Blevins (eblevins) wrote :

Suffering from the same problem in 22.04

After applying just this change to the Ubuntu source openvpn works as expected:
https://github.com/OpenSC/pkcs11-helper/commit/fba328fd7519833966712589be8fff419219277a

Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in pkcs11-helper (Ubuntu):
status: New → Confirmed
Brian Murray (brian-murray)
tags: added: rls-jj-incoming
Revision history for this message
Sebastien Bacher (seb128) wrote :

Thank you for your bug report

Changed in pkcs11-helper (Ubuntu):
importance: Undecided → High
status: Confirmed → Fix Committed
Revision history for this message
Sebastien Bacher (seb128) wrote :

I've uploaded to the current Ubuntu serie and a SRU to the LTS

description: updated
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package pkcs11-helper - 1.28-1ubuntu1

---------------
pkcs11-helper (1.28-1ubuntu1) kinetic; urgency=medium

  * debian/patches/git-openvpn-smartcard.patch:
    - openssl: set back key into EVP for openssl-3 to work, fix openvpn
      authentification using smartcards (lp: #1970943)

 -- Sebastien Bacher <email address hidden> Wed, 18 May 2022 15:29:01 +0200

Changed in pkcs11-helper (Ubuntu):
status: Fix Committed → Fix Released
Revision history for this message
Brian Murray (brian-murray) wrote : Please test proposed package

Hello Lorenz, or anyone else affected,

Accepted pkcs11-helper into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/pkcs11-helper/1.28-1ubuntu0.22.04.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-jammy to verification-done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-jammy. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

Changed in pkcs11-helper (Ubuntu Jammy):
status: New → Fix Committed
tags: added: verification-needed verification-needed-jammy
Revision history for this message
Lorenz Schwittmann (lorenz-schwittmann) wrote :

Hey there,

I have performed the following steps to test the proposed fix:

1) removed self-compiled pkcs11-helper version 1.29.0 from my system (hotfix)
2) tried to connect to an OpenVPN with smartcard authentification => failed as expected
3) enabled jammy-proposed
4) installed libpkcs11-helper1 1.28-1ubuntu0.22.04.1
5) tried to connect to an OpenVPN with smartcard authentification => connection succeeded

I therefore conclude that this update fixes the issue; thanks!

tags: added: verification-done-jammy
removed: verification-needed-jammy
Sebastien Bacher (seb128)
tags: added: verification-done
removed: rls-jj-incoming verification-needed
Revision history for this message
Chris Halse Rogers (raof) wrote : Update Released

The verification of the Stable Release Update for pkcs11-helper has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package pkcs11-helper - 1.28-1ubuntu0.22.04.1

---------------
pkcs11-helper (1.28-1ubuntu0.22.04.1) jammy; urgency=medium

  * debian/patches/git-openvpn-smartcard.patch:
    - openssl: set back key into EVP for openssl-3 to work, fix openvpn
      authentification using smartcards (lp: #1970943)

 -- Sebastien Bacher <email address hidden> Wed, 18 May 2022 15:29:01 +0200

Changed in pkcs11-helper (Ubuntu Jammy):
status: Fix Committed → Fix Released
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