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Description of problem: 1- Install NetworkManager-strongswan-gnome 2- Copy IPsec certificates and private key to ~/.cert/ 3- In NetworkManager, add new VPN of type "IPsec/IKEv2 (strongswan)", and select the files copied earlier 4- Try to start the VPN SELinux is preventing charon-nm from using the 'dac_override' capabilities. ***** Plugin dac_override (91.4 confidence) suggests ********************** If you want to help identify if domain needs this access or you have a file with the wrong permissions on your system Then turn on full auditing to get path information about the offending file and generate the error again. Do Turn on full auditing # auditctl -w /etc/shadow -p w Try to recreate AVC. Then execute # ausearch -m avc -ts recent If you see PATH record check ownership/permissions on file, and fix it, otherwise report as a bugzilla. ***** Plugin catchall (9.59 confidence) suggests ************************** If you believe that charon-nm should have the dac_override capability by default. Then you should report this as a bug. You can generate a local policy module to allow this access. Do allow this access for now by executing: # ausearch -c 'charon-nm' --raw | audit2allow -M my-charonnm # semodule -X 300 -i my-charonnm.pp Additional Information: Source Context system_u:system_r:ipsec_t:s0 Target Context system_u:system_r:ipsec_t:s0 Target Objects Unknown [ capability ] Source charon-nm Source Path charon-nm Port <Unknown> Host (removed) Source RPM Packages Target RPM Packages Policy RPM selinux-policy-3.14.1-32.fc28.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Permissive Host Name (removed) Platform Linux (removed) 4.16.14-300.fc28.x86_64 #1 SMP Tue Jun 5 16:23:44 UTC 2018 x86_64 x86_64 Alert Count 23 First Seen 2018-06-09 18:14:03 +03 Last Seen 2018-06-10 17:34:08 +03 Local ID afde8813-3cc5-4e28-ab49-c1ea0393d94b Raw Audit Messages type=AVC msg=audit(1528641248.193:238): avc: denied { dac_override } for pid=2405 comm="charon-nm" capability=1 scontext=system_u:system_r:ipsec_t:s0 tcontext=system_u:system_r:ipsec_t:s0 tclass=capability permissive=1 Hash: charon-nm,ipsec_t,ipsec_t,capability,dac_override Version-Release number of selected component: selinux-policy-3.14.1-32.fc28.noarch Additional info: component: selinux-policy reporter: libreport-2.9.5 hashmarkername: setroubleshoot kernel: 4.16.14-300.fc28.x86_64 type: libreport
Additional info: I'm trying to setup Algo VPN (https://github.com/trailofbits/algo/), in case that's relevant. Also, enabling SELinux permissive mode makes the VPN work.
More logs: $ ls -l ~/.cert/* -rw-rw-r--. 1 user user 2555 Jun 9 16:05 /home/user/.cert/cert.pem -rw-rw-r--. 1 user user 241 Jun 9 16:05 /home/user/.cert/privkey.pem -rw-rw-r--. 1 user user 648 Jun 9 16:04 /home/user/.cert/cacert.pem $ sudo auditctl -w /etc/shadow -p w $ nmcli connection up VPN1 Error: Connection activation failed: The VPN service failed to start $ sudo ausearch -m avc -ts recent ---- time->Mon Jun 11 14:54:07 2018 type=AVC msg=audit(1528718047.621:261): avc: denied { dac_override } for pid=2931 comm="charon-nm" capability=1 scontext=system_u:system_r:ipsec_t:s0 tcontext=system_u:system_r:ipsec_t:s0 tclass=capability permissive=0 ---- time->Mon Jun 11 14:54:07 2018 type=AVC msg=audit(1528718047.625:262): avc: denied { dac_override } for pid=2931 comm="charon-nm" capability=1 scontext=system_u:system_r:ipsec_t:s0 tcontext=system_u:system_r:ipsec_t:s0 tclass=capability permissive=0 $ journalctl --this-boot | grep 'charon-nm\|NetworkManager' [snip] Jun 11 14:54:07 comp1 NetworkManager[915]: <info> [1528718047.0957] audit: op="connection-activate" uuid="6a52dcf1-8a56-489f-b8f7-1b1c80eba76d" name="VPN1" pid=2887 uid=1000 result="success" Jun 11 14:54:07 comp1 NetworkManager[915]: <info> [1528718047.4122] vpn-connection[0x55ddb9144110,6a52dcf1-8a56-489f-b8f7-1b1c80eba76d,"VPN1",0]: Started the VPN service, PID 2931 Jun 11 14:54:07 comp1 charon-nm[2931]: 00[DMN] Starting charon NetworkManager backend (strongSwan 5.6.2) Jun 11 14:54:07 comp1 charon-nm[2931]: 00[LIB] openssl FIPS mode(2) - enabled Jun 11 14:54:07 comp1 NetworkManager[915]: <info> [1528718047.6156] vpn-connection[0x55ddb9144110,6a52dcf1-8a56-489f-b8f7-1b1c80eba76d,"VPN1",0]: Saw the service appear; activating connection Jun 11 14:54:07 comp1 charon-nm[2931]: 00[LIB] loaded plugins: nm-backend charon-nm pkcs11 tpm aesni aes des rc2 sha2 sha1 md4 md5 mgf1 random nonce x509 revocation constraints pkcs1 pkcs7 pkcs8 sshkey pem openssl gcrypt fips-prf gmp curve25519 chapoly xcbc cmac hmac ctr ccm gcm curl kernel-netlink socket-default eap-identity eap-md5 eap-gtc eap-mschapv2 eap-tls eap-ttls eap-peap Jun 11 14:54:07 comp1 charon-nm[2931]: 00[JOB] spawning 16 worker threads Jun 11 14:54:07 comp1 audit[2931]: AVC avc: denied { dac_override } for pid=2931 comm="charon-nm" capability=1 scontext=system_u:system_r:ipsec_t:s0 tcontext=system_u:system_r:ipsec_t:s0 tclass=capability permissive=0 Jun 11 14:54:07 comp1 charon-nm[2931]: 05[LIB] opening '/home/user/.cert/privkey.pem' failed: Permission denied Jun 11 14:54:07 comp1 charon-nm[2931]: 05[LIB] building CRED_PRIVATE_KEY - RSA failed, tried 9 builders Jun 11 14:54:07 comp1 NetworkManager[915]: <info> [1528718047.6255] vpn-connection[0x55ddb9144110,6a52dcf1-8a56-489f-b8f7-1b1c80eba76d,"VPN1",0]: VPN connection: (ConnectInteractive) reply received Jun 11 14:54:07 comp1 charon-nm[2931]: 05[CFG] received initiate for NetworkManager connection VPN1 Jun 11 14:54:07 comp1 audit[2931]: AVC avc: denied { dac_override } for pid=2931 comm="charon-nm" capability=1 scontext=system_u:system_r:ipsec_t:s0 tcontext=system_u:system_r:ipsec_t:s0 tclass=capability permissive=0 Jun 11 14:54:07 comp1 charon-nm[2931]: 05[LIB] opening '/home/user/.cert/cacert.pem' failed: Permission denied Jun 11 14:54:07 comp1 charon-nm[2931]: 05[LIB] building CRED_CERTIFICATE - X509 failed, tried 6 builders Jun 11 14:54:07 comp1 NetworkManager[915]: <warn> [1528718047.6272] vpn-connection[0x55ddb9144110,6a52dcf1-8a56-489f-b8f7-1b1c80eba76d,"VPN1",0]: VPN connection: failed to connect: 'Loading gateway certificate failed.' Jun 11 14:54:07 comp1 NetworkManager[915]: <info> [1528718047.6285] vpn-connection[0x55ddb9144110,6a52dcf1-8a56-489f-b8f7-1b1c80eba76d,"VPN1",0]: VPN plugin: state changed: stopped (6) Jun 11 14:54:11 comp1 setroubleshoot[2958]: SELinux is preventing charon-nm from using the dac_override capability. For complete SELinux messages run: sealert -l afde8813-3cc5-4e28-ab49-c1ea0393d94b Jun 11 14:54:11 comp1 python3[2958]: SELinux is preventing charon-nm from using the dac_override capability. If you believe that charon-nm should have the dac_override capability by default. # ausearch -c 'charon-nm' --raw | audit2allow -M my-charonnm Jun 11 14:54:11 comp1 setroubleshoot[2958]: SELinux is preventing charon-nm from using the dac_override capability. For complete SELinux messages run: sealert -l afde8813-3cc5-4e28-ab49-c1ea0393d94b Jun 11 14:54:11 comp1 python3[2958]: SELinux is preventing charon-nm from using the dac_override capability. If you believe that charon-nm should have the dac_override capability by default. # ausearch -c 'charon-nm' --raw | audit2allow -M my-charonnm
selinux-policy-3.14.1-36.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-1050fb248b
selinux-policy-3.14.1-36.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-1050fb248b
selinux-policy-3.14.1-36.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.