The status of this bug is invalid, because we will not downgrade default security level to the one that allows broken crypto to be used by default. And instructions on how to self-compromise systems are available and are currently known to work.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to openssl in Ubuntu. https://bugs.launchpad.net/bugs/1866611 Title: OpenVPN w. SHA1 signed CA broken after upgrade to 1.1.1d-2ubuntu6 Status in openssl package in Ubuntu: Invalid Bug description: After upgrading openssl on my Focal-install this morning (upgrade openssl:amd64 1.1.1d-2ubuntu3 1.1.1d-2ubuntu6 per /var/log/dpkg.log), my OpenVPN tunnel refuses to connect to our corporate VPN (from /var/log/syslog): corp-laptop nm-openvpn[4688]: VERIFY ERROR: depth=0, error=CA signature digest algorithm too weak: C=DK, ST=None, L=Copenhagen, O=XX, OU=XX, CN=XX, emailAddress=XX corp-laptop nm-openvpn[4688]: OpenSSL: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed I'm told we're running a SHA1-signed CA, which we're guessing has been deprecated somewhere between -2ubuntu3 and -2ubuntu6. The changelog for -2ubuntu4 mentions importing some upstream changes, but isn't more specific than that: https://changelogs.ubuntu.com/changelogs/pool/main/o/openssl/openssl_1.1 .1d-2ubuntu4/changelog As a work-around, the internet suggests two work-arounds (neither of which has worked for me): 1) Adding the following to /etc/defaults/openssl: OPTARGS="--tls-cipher DEFAULT:@SECLEVEL=0" 2) Adding the following to /etc/ssl/openssl.conf: CipherString = :@SECLEVEL=1 I also tried rolling back the package, but the old version doesn't seem to be available: $ sudo apt install openssl=1.1.1d-2ubuntu3 ... E: Version '1.1.1d-2ubuntu3' for 'openssl' was not found I am no SSL-expert and would appreciate any pointers to get around this. (Our network-dept. does not have the bandwidth to roll over our CA on short notice, so I will need some other way to move ahead). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1866611/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
