** Description changed: [ Impact ] When creating a SNMPv3 user, the net-snmp-create-v3-user script fails to write the generated configuration file with the following error: # net-snmp-create-v3-user -ro -A MD5 -a XXXXXX -x YYYYY -X DES ZZZZZ adding the following line to /var/lib/snmp/snmpd.conf: - createUser ZZZZZ MD5 "XXXXXX" DES "YYYYY" + createUser ZZZZZ MD5 "XXXXXX" DES "YYYYY" adding the following line to /snmp/snmpd.conf: - rouser ZZZZZ + rouser ZZZZZ touch: cannot touch '/snmp/snmpd.conf': No such file or directory /usr/bin/net-snmp-create-v3-user: 144: cannot create /snmp/snmpd.conf: Directory nonexistent [ Test Plan ] The bug affects Impish and Jammy. One can reproduce it by issuing the following commands: $ lxc launch ubuntu-daily:jammy net-snmp-bug1969623-jammy $ lxc shell net-snmp-bug1969623-jammy - # apt update + # apt update # apt install -y snmpd # systemctl stop snmpd # net-snmp-create-v3-user -ro -A MD5 -a XXXXXX -x YYYYY -X DES ZZZZZ You can verify that the command errors out with: adding the following line to /var/lib/snmp/snmpd.conf: - createUser ZZZZZ MD5 "XXXXXX" DES "YYYYY" + createUser ZZZZZ MD5 "XXXXXX" DES "YYYYY" adding the following line to /snmp/snmpd.conf: - rouser ZZZZZ + rouser ZZZZZ touch: cannot touch '/snmp/snmpd.conf': No such file or directory /usr/bin/net-snmp-create-v3-user: 146: cannot create /snmp/snmpd.conf: Directory nonexistent When using a fixed version of the package, the command should succeed with: adding the following line to /var/lib/snmp/snmpd.conf: - createUser ZZZZZ MD5 "XXXXXX" DES "YYYYY" + createUser ZZZZZ MD5 "XXXXXX" DES "YYYYY" adding the following line to /usr/share/snmp/snmpd.conf: - rouser ZZZZZ + rouser ZZZZZ [ Where problems could occur ] The fix is very trivial and shouldn't cause regressions in existing - deployments. If the user has made local modifications to the + deployments; the only thing being patched is the net-snmp-create-v3-user + script, so in the unlikely case that a regression occurs it should be + limited to the script. If the user has made local modifications to /usr/bin/net-snmp-create-v3-user in order to workaround the problem, they will lose those modifications when updating the package. [ Other Info ] The same bug has been reported in Debian, but the fix there is a bit different: https://salsa.debian.org/debian/net- snmp/-/commit/b4281b2fc9b7ae7897a01d8be586711df98abad7 Debian's fix is arguably more correct because SNMPCONFPATH will expand to /etc/snmp/, which is the right directory to place configuration files in. However, since we're dealing with an SRU here, I chose to go with upstream's fix because it keeps the old behaviour of placing the config file inside /var/lib/snmp/. We will likely revisit this decision during the KK cycle. [ Original Description ] When creating a SNMPv3 user this error appears: $ /usr/bin/net-snmp-config --create-snmpv3-user -ro -A MD5 -a XXXXXX -x YYYYY -X DES ZZZZZ touch: cannot touch '/snmp/snmpd.conf': No such file or directory /usr/bin/net-snmp-create-v3-user: 146: cannot create /snmp/snmpd.conf: Directory nonexistent Looking at /usr/bin/net-snmp-create-v3-user line 146, it seems that $outfile references ${datarootdir} in line 139, which is undefined. Further outfile is already defined at line 121. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: snmpd 5.9.1+dfsg-1ubuntu2 ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30 Uname: Linux 5.15.0-25-generic x86_64 ApportVersion: 2.20.11-0ubuntu82 Architecture: amd64 CasperMD5CheckResult: pass Date: Wed Apr 20 13:34:44 2022 InstallationDate: Installed on 2022-04-20 (0 days ago) InstallationMedia: Ubuntu-Server 22.04 LTS "Jammy Jellyfish" - Beta amd64 (20220330) ProcEnviron: - TERM=xterm-256color - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm-256color + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash SourcePackage: net-snmp UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.snmp.snmpd.conf: [modified] mtime.conffile..etc.snmp.snmpd.conf: 2022-04-20T12:50:27.596000
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1969623 Title: Creation of SNMPv3 user broken (Jammy/22.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1969623/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
