SUSE-SU-2020:3729-1: important: Security update for clamav

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for clamav
______________________________________________________________________________

Announcement ID:    SUSE-SU-2020:3729-1
Rating:             important
References:         #1118459 #1119353 #1144504 #1149458 #1151839 
                    #1157763 #1171981 #1174250 #1174255 ECO-3010 
                    
Cross-References:   CVE-2019-12625 CVE-2019-12900 CVE-2019-15961
                    CVE-2020-3123 CVE-2020-3327 CVE-2020-3341
                    CVE-2020-3350 CVE-2020-3481
Affected Products:
                    SUSE Linux Enterprise Server 12-SP5
______________________________________________________________________________

   An update that solves 8 vulnerabilities, contains one
   feature and has one errata is now available.

Description:

   This update for clamav fixes the following issues:

   clamav was updated to 0.103.0 to implement jsc#ECO-3010 and bsc#1118459.

   * clamd can now reload the signature database without blocking scanning.
     This multi-threaded database reload improvement was made possible thanks
     to a community effort.
     - Non-blocking database reloads are now the default behavior. Some
       systems that are more constrained on RAM may need to disable
       non-blocking reloads as it will temporarily consume two times as much
       memory. We added a new clamd config option ConcurrentDatabaseReload,
       which may be set to no.
   * Fix clamav-milter.service (requires clamd.service to run)
   * Fix freshclam crash in FIPS mode. (bsc#1119353)

   Update to version 0.102.4:

   Accumulated security fixes:

   * CVE-2020-3350: Fix a vulnerability wherein a malicious user could
     replace a scan target's directory with a symlink to another path to
     trick clamscan, clamdscan, or clamonacc into removing or moving a
     different file (eg. a critical system file). The issue would affect
     users that use the --move or --remove options for clamscan, clamdscan,
     and clamonacc. (bsc#1174255)
   * CVE-2020-3327: Fix a vulnerability in the ARJ archive parsing module in
     ClamAV 0.102.3 that could cause a Denial-of-Service (DoS) condition.
     Improper bounds checking results in an
     out-of-bounds read which could cause a crash. The previous fix for this
      CVE in 0.102.3 was incomplete. This fix correctly resolves the issue.
   * CVE-2020-3481: Fix a vulnerability in the EGG archive module in ClamAV
     0.102.0 - 0.102.3 could cause a Denial-of-Service (DoS) condition.
     Improper error handling may result in a crash due to a NULL pointer
     dereference. This vulnerability is mitigated for those using the
     official ClamAV signature databases because the file type signatures in
     daily.cvd will not enable the EGG archive parser in versions affected by
     the vulnerability. (bsc#1174250)
   * CVE-2020-3341: Fix a vulnerability in the PDF parsing module in ClamAV
     0.101 - 0.102.2 that could cause a Denial-of-Service (DoS) condition.
     Improper size checking of a buffer used to initialize AES decryption
     routines results in an out-of-bounds read which may cause a crash.
     (bsc#1171981)
   * CVE-2020-3123: A denial-of-service (DoS) condition may occur when using
     the optional credit card data-loss-prevention (DLP) feature. Improper
     bounds checking of an unsigned variable resulted in an
     out-of-bounds read, which causes a crash.
   * CVE-2019-15961: A Denial-of-Service (DoS) vulnerability may
     occur when scanning a specially crafted email file as a result
     of excessively long scan times. The issue is resolved by implementing
      several maximums in parsing MIME messages and by
     optimizing use of memory allocation. (bsc#1157763).
   * CVE-2019-12900: An out of bounds write in the NSIS bzip2 (bsc#1149458)
   * CVE-2019-12625: Introduce a configurable time limit to mitigate zip bomb
     vulnerability completely. Default is 2 minutes, configurable useing the
     clamscan --max-scantime and for clamd using the MaxScanTime config
     option (bsc#1144504)

   - Increase the startup timeout of clamd to 5 minutes to cater for the
     grown virus database as a workaround until clamd has learned to talk to
     systemd to extend the timeout as long as needed. (bsc#1151839)


Patch Instructions:

   To install this SUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Server 12-SP5:

      zypper in -t patch SUSE-SLE-SERVER-12-SP5-2020-3729=1



Package List:

   - SUSE Linux Enterprise Server 12-SP5 (aarch64 ppc64le s390x x86_64):

      clamav-0.103.0-3.3.1
      clamav-debuginfo-0.103.0-3.3.1
      clamav-debugsource-0.103.0-3.3.1


References:

   https://www.suse.com/security/cve/CVE-2019-12625.html
   https://www.suse.com/security/cve/CVE-2019-12900.html
   https://www.suse.com/security/cve/CVE-2019-15961.html
   https://www.suse.com/security/cve/CVE-2020-3123.html
   https://www.suse.com/security/cve/CVE-2020-3327.html
   https://www.suse.com/security/cve/CVE-2020-3341.html
   https://www.suse.com/security/cve/CVE-2020-3350.html
   https://www.suse.com/security/cve/CVE-2020-3481.html
   https://bugzilla.suse.com/1118459
   https://bugzilla.suse.com/1119353
   https://bugzilla.suse.com/1144504
   https://bugzilla.suse.com/1149458
   https://bugzilla.suse.com/1151839
   https://bugzilla.suse.com/1157763
   https://bugzilla.suse.com/1171981
   https://bugzilla.suse.com/1174250
   https://bugzilla.suse.com/1174255