Security update for clamav (moderate)

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