selinux January 2022

selinux@lists.fedoraproject.org

3 participants
2 discussions

custom selinux
by al so 27 Jan '22

27 Jan '22

On a system where SELinux is enforced, how to selectively disable SELinux on a few custom linux processes without impacting the rest?

2 2

SELinux is preventing mktemp from using the dac_read_search capability.
by Robert Moskowitz 02 Jan '22

02 Jan '22

I keep getting these errors. I got them back with F32 and Xfce, and now with F35 and Xfce. Here is the full detail. What do I do to fix this? =============== SELinux is preventing mktemp from using the dac_read_search capability. ***** 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 mktemp should have the dac_read_search 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 'mktemp' --raw | audit2allow -M my-mktemp # semodule -X 300 -i my-mktemp.pp Additional Information: Source Context system_u:system_r:logwatch_mail_t:s0-s0:c0.c1023 Target Context system_u:system_r:logwatch_mail_t:s0-s0:c0.c1023 Target Objects Unknown [ capability ] Source mktemp Source Path mktemp Port <Unknown> Host lx140e.htt-consult.com Source RPM Packages Target RPM Packages SELinux Policy RPM selinux-policy-targeted-35.7-1.fc35.noarch Local Policy RPM selinux-policy-targeted-35.7-1.fc35.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name lx140e.htt-consult.com Platform Linux lx140e.htt-consult.com 5.15.11-200.fc35.x86_64 #1 SMP Wed Dec 22 15:41:11 UTC 2021 x86_64 x86_64 Alert Count 13912 First Seen 2021-11-15 03:27:05 EST Last Seen 2022-01-02 03:09:16 EST Local ID 2ef8a1a9-ddf5-42cc-b5dc-c08354265cc8 Raw Audit Messages type=AVC msg=audit(1641110956.728:1612): avc: denied { dac_read_search } for pid=24078 comm="dotlockfile" capability=2 scontext=system_u:system_r:logwatch_mail_t:s0-s0:c0.c1023 tcontext=system_u:system_r:logwatch_mail_t:s0-s0:c0.c1023 tclass=capability permissive=0 Hash: mktemp,logwatch_mail_t,logwatch_mail_t,capability,dac_read_search

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selinux January 2022