openSUSE Security Update: Security update for clamav
______________________________________________________________________________

Announcement ID:    openSUSE-SU-2020:2276-1
Rating:             moderate
References:         #1104457 #1118459 #1130721 #1144504 #1149458 
                    #1157763 
Cross-References:   CVE-2019-12625 CVE-2019-12900 CVE-2019-15961
                    CVE-2019-1785 CVE-2019-1786 CVE-2019-1787
                    CVE-2019-1788 CVE-2019-1789 CVE-2019-1798
                    CVE-2020-3123 CVE-2020-3327 CVE-2020-3341
                    CVE-2020-3350 CVE-2020-3481
Affected Products:
                    openSUSE Leap 15.2
______________________________________________________________________________

   An update that fixes 14 vulnerabilities is now available.

Description:

   This update for clamav fixes the following issues:

   clamav was updated to the new major release 0.103.0.
   (jsc#ECO-3010,bsc#1118459)

   Note that libclamav was changed incompatible, if you have a 3rd party
   application that uses libclamav, it needs to be rebuilt.

   Update to 0.103.0

   * 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)

   Update to 0.102.4

     * 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.
     * 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.

   Update to 0.102.3

     * CVE-2020-3327: Fix a vulnerability in the ARJ archive parsing module
       in ClamAV 0.102.2 that could cause a Denial-of-Service (DoS)
       condition. Improper bounds checking of an unsigned variable results in
       an out-of-bounds read which causes a crash.
     * 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.
     * Fix "Attempt to allocate 0 bytes" error when parsing some PDF
       documents.
     * Fix a couple of minor memory leaks.
     * Updated libclamunrar to UnRAR 5.9.2.

   Update to 0.102.2:

     * 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.
     * Significantly improved the scan speed of PDF files on Windows.
     * Re-applied a fix to alleviate file access issues when scanning RAR
       files in downstream projects that use libclamav where the scanning
       engine is operating in a low-privilege process. This bug was
       originally fixed in 0.101.2 and the fix was mistakenly omitted from
       0.102.0.
     * Fixed an issue where freshclam failed to update if the database
       version downloaded is one version older than advertised. This
       situation may
       occur after a new database version is published. The issue affected
        users downloading the whole CVD database file.
     * Changed the default freshclam ReceiveTimeout setting to 0 (infinite).
       The ReceiveTimeout had caused needless database update failures for
       users with slower internet connections.
     * Correctly display the number of kilobytes (KiB) in progress bar and
       reduced the size of the progress bar to accommodate 80-character width
       terminals.
     * Fixed an issue where running freshclam manually causes a daemonized
       freshclam process to fail when it updates because the manual instance
       deletes the temporary download directory. The freshclam temporary
       files will now download to a unique directory created at the time of
       an update instead of using a hardcoded directory created/destroyed at
       the program start/exit.
     * Fix for freshclam's OnOutdatedExecute config option.
     * Fixes a memory leak in the error condition handling for the email
       parser.
     * Improved bound checking and error handling in ARJ archive parser.
     * Improved error handling in PDF parser.
     * Fix for memory leak in byte-compare signature handler.

   - The freshclam.service should not be started before the network is
     online (it checks for updates immediately upon service start)

   Update to 0.102.1:

     * CVE-2019-15961, bsc#1157763: 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.
     * Build system fixes to build clamav-milter, to correctly link with
       libxml2 when detected, and to correctly detect fanotify for on-access
       scanning feature support.
     * Signature load time is significantly reduced by changing to a more
       efficient algorithm for loading signature patterns and allocating the
       AC trie. Patch courtesy of Alberto Wu.
     * Introduced a new configure option to statically link libjson-c with
       libclamav. Static linking with libjson is highly recommended to
       prevent crashes in applications that use libclamav alongside another
       JSON parsing library.
     * Null-dereference fix in email parser when using the
       --gen-json metadata option.
     * Fixes for Authenticode parsing and certificate signature (.crb
       database) bugs.

   Update to 0.102.0:

     * The On-Access Scanning feature has been migrated out of clamd and into
       a brand new utility named clamonacc. This utility is similar to
       clamdscan and clamav-milter in that it acts as a client to clamd. This
       separation from clamd means that clamd no longer needs to run with
       root privileges while scanning potentially malicious files. Instead,
       clamd may drop privileges to run under an account that does not have
       super-user. In addition to improving the security posture of running
       clamd with On-Access enabled, this update fixed a few outstanding
       defects:
       - On-Access scanning for created and moved files (Extra-Scanning) is
         fixed.
       - VirusEvent for On-Access scans is fixed.
       - With clamonacc, it is now possible to copy, move, or remove a file
         if the scan triggered an alert, just like with clamdscan.
     * The freshclam database update utility has undergone a significant
       update. This includes:
       - Added support for HTTPS.
       - Support for database mirrors hosted on ports other than 80.
       - Removal of the mirror management feature (mirrors.dat).
       - An all new libfreshclam library API.
   - created new subpackage libfreshclam2

   Update to 0.101.4:

     * 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)

   Update to version 0.101.3:

     * bsc#1144504: ZIP bomb causes extreme CPU spikes

   Update to version 0.101.2 (bsc#1130721)

     * CVE-2019-1787: An out-of-bounds heap read condition may occur when
       scanning PDF documents. The defect is a failure to correctly keep
       track of the number
       of bytes remaining in a buffer when indexing file data.
     * CVE-2019-1789: An out-of-bounds heap read condition may occur when
       scanning PE files (i.e. Windows EXE and DLL files) that have been
       packed using Aspack as a result of inadequate bound-checking.
     * CVE-2019-1788: An out-of-bounds heap write condition may occur when
       scanning OLE2 files such as Microsoft Office 97-2003 documents. The
       invalid write happens when an invalid pointer is mistakenly used to
       initialize a 32bit integer to zero. This is likely to crash the
       application.
     * CVE-2019-1786: An out-of-bounds heap read condition may occur when
       scanning malformed PDF documents as a result of improper
       bounds-checking.
     * CVE-2019-1785: A path-traversal write condition may occur as a result
       of improper input validation when scanning RAR archives.
     * CVE-2019-1798: A use-after-free condition may occur as a result of
       improper error handling when scanning nested RAR archives.

   This update was imported from the SUSE:SLE-15:Update update project.


Patch Instructions:

   To install this openSUSE 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:

   - openSUSE Leap 15.2:

      zypper in -t patch openSUSE-2020-2276=1



Package List:

   - openSUSE Leap 15.2 (x86_64):

      clamav-0.103.0-lp152.6.3.1
      clamav-debuginfo-0.103.0-lp152.6.3.1
      clamav-debugsource-0.103.0-lp152.6.3.1
      clamav-devel-0.103.0-lp152.6.3.1
      libclamav9-0.103.0-lp152.6.3.1
      libclamav9-debuginfo-0.103.0-lp152.6.3.1
      libfreshclam2-0.103.0-lp152.6.3.1
      libfreshclam2-debuginfo-0.103.0-lp152.6.3.1


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-2019-1785.html
   https://www.suse.com/security/cve/CVE-2019-1786.html
   https://www.suse.com/security/cve/CVE-2019-1787.html
   https://www.suse.com/security/cve/CVE-2019-1788.html
   https://www.suse.com/security/cve/CVE-2019-1789.html
   https://www.suse.com/security/cve/CVE-2019-1798.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/1104457
   https://bugzilla.suse.com/1118459
   https://bugzilla.suse.com/1130721
   https://bugzilla.suse.com/1144504
   https://bugzilla.suse.com/1149458
   https://bugzilla.suse.com/1157763
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