Not sure if it's related, but when I launch clamd *without* systemd and then try to access an "infected" file, 2 problems occur:
- clamd does not prevent access, despite having the option enabled - clamd goes into an infinite loop and hogs the CPU: Logs: Thu May 5 09:42:20 2016 -> ScanOnAccess: /etc/suricata/rules/emerging-activex.rules: Win.Trojan.cve_2011_2657-1(30e2f8e333f1624bb5ab66bed16eb110:274398) FOUND Thu May 5 09:42:20 2016 -> ScanOnAccess: /tmp/clamav-326fdcae0616839f918d7b703a8e513b.tmp/nocomment.html (deleted): Win.Trojan.cve_2011_2657-1(d361373a52eb4e0cfcb1fd4783700152:273785) FOUND Thu May 5 09:42:21 2016 -> ScanOnAccess: /tmp/clamav-29d22f0e38aa614b58575e4dee9d27ad.tmp/nocomment.html (deleted): Win.Trojan.cve_2011_2657-1(d361373a52eb4e0cfcb1fd4783700152:273785) FOUND Thu May 5 09:42:21 2016 -> ScanOnAccess: /tmp/clamav-df9d8818c62cd2824baa139b7de03183.tmp/nocomment.html (deleted): Win.Trojan.cve_2011_2657-1(d361373a52eb4e0cfcb1fd4783700152:273785) FOUND Thu May 5 09:42:21 2016 -> ScanOnAccess: /tmp/clamav-ff68924711538f56f6281f0d6847928d.tmp/nocomment.html (deleted): Win.Trojan.cve_2011_2657-1(d361373a52eb4e0cfcb1fd4783700152:273785) FOUND Thu May 5 09:42:21 2016 -> ScanOnAccess: /tmp/clamav-eae1c4e9bc4ecf83322449216feb4f42.tmp/nocomment.html (deleted): Win.Trojan.cve_2011_2657-1(d361373a52eb4e0cfcb1fd4783700152:273785) FOUND Thu May 5 09:42:21 2016 -> ScanOnAccess: /tmp/clamav-086da1b9d6df8989cb621925b13c7055.tmp/nocomment.html (deleted): Win.Trojan.cve_2011_2657-1(d361373a52eb4e0cfcb1fd4783700152:273785) FOUND [...] And it goes on forever... Need to kill it. ________________________________________ From: clamav-users [clamav-users-boun...@lists.clamav.net] on behalf of Mikko Caldara [mikko.cald...@fca.org.uk] Sent: 05 May 2016 09:34 To: ClamAV users ML Subject: Re: [clamav-users] ScanOnAccess issue when clamd launched from systemd SELinux is indeed enabled, but there's no blocking message in audit.log when the error occurs. After further retries, it seems the error sometimes occurs a while after clamd has started, even 2 minutes: Thu May 5 08:25:38 2016 -> ScanOnAccess: notifying only for access attempts. Thu May 5 08:25:38 2016 -> ScanOnAccess: Protecting '/' and rest of mount. Thu May 5 08:25:38 2016 -> ScanOnAccess: Max file size limited to 5242880 bytes Thu May 5 08:27:29 2016 -> ERROR: ScanOnAccess: Internal error (failed to read data) ... Permission denied I tried passing the --debug flag to the command, but it does not seem to provide any more info. The OS is RHEL 7.2 running on Amazon EC2, kernel: 3.10.0-327.10.1.el7.x86_64 Thanks ________________________________________ From: clamav-users [clamav-users-boun...@lists.clamav.net] on behalf of Bond Masuda [bond.mas...@hexadiam.com] Sent: 04 May 2016 19:11 To: ClamAV users ML Subject: Re: [clamav-users] ScanOnAccess issue when clamd launched from systemd Is SELinux enabled on that system? If so, I would look to see if SELinux is blocking. On 05/04/2016 09:29 AM, Mikko Caldara wrote: > Hello, > I'm trying to configure OnAccess scanning on the whole drive, as read in this > post blog: > http://blog.clamav.net/2016/03/configuring-on-access-scanning-in-clamav.html > (first example) > It works fine if I launch clamd manually, with: /usr/sbin/clamd -c > /etc/clamd.conf & > > If I use systemd to launch the clamd service, the ScanOnAccess functionality > is broken (Permission denied). > > Here's the systemd file: > > > > [Unit] > > Description=ClamAV Daemon > > > [Service] > > ExecStartPre=/usr/bin/mkdir -p /var/run/clamav > > Type=forking > > PIDFile=/var/run/clamav/clamd.pid > > User=root > > ExecStart=/usr/sbin/clamd -c /etc/clamd.conf > > > [Install] > > WantedBy=multi-user.target > > > And here is the partial log, with the error: > > > Wed May 4 15:45:29 2016 -> +++ Started at Wed May 4 15:45:29 2016 > > Wed May 4 15:45:29 2016 -> clamd daemon 0.99.1 (OS: linux-gnu, ARCH: x86_64, > CPU: x86_64) > > Wed May 4 15:45:29 2016 -> Running as user root (UID 0, GID 0) > > [...] > > Wed May 4 15:45:30 2016 -> ScanOnAccess: notifying only for access attempts. > > Wed May 4 15:45:30 2016 -> ScanOnAccess: Protecting '/' and rest of mount. > > Wed May 4 15:45:30 2016 -> ScanOnAccess: Max file size limited to 5242880 > bytes > > Wed May 4 15:45:31 2016 -> ERROR: ScanOnAccess: Internal error (failed to > read data) ... Permission denied > > > Any ideas as of why this is happening? > > > Thanks > > /MC > > > This communication and any attachments contain information which is > confidential and may be subject to legal privilege. It is for intended > recipients only. If you are not the intended recipient you must not copy, > distribute, publish, rely on or otherwise use it without our consent. Some of > our communications may contain confidential information which it could be a > criminal offence for you to disclose or use without authority. If you have > received this email in error please notify postmas...@fca.org.uk immediately > and delete the email from your computer. 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