Showing posts with label Release Candidate. Show all posts
Showing posts with label Release Candidate. Show all posts

Friday, March 31, 2023

ClamAV 1.1.0 release candidate now available

We are excited to announce the ClamAV 1.1.0 release candidate.

You may find the source code and installers for this release on:

Tip: If you are downloading the source from the GitHub release page, the package labeled "clamav-1.1.0-rc.tar.gz" does not require an internet connection to build.  All dependencies are included in this package.  But if you download the ZIP or TAR.GZ generated by GitHub, located at the very bottom, then an internet connection will be required during the build to download additional Rust dependencies.

For Docker users, there is no specific Docker tag for the release candidate, but you can use the clamav:unstable or clamav:unstable_base tags.

The release candidate phase is expected to last two to three weeks before we publish the stable release or a second release candidate. Please take this time to evaluate ClamAV 1.1.0.  

Please help us validate this release by providing feedback via the ClamAV mailing list or on our Discord.

ClamAV 1.1.0 includes the following improvements and changes:

Major changes

  • Added the ability to extract images embedded in HTML CSS <style> blocks.

  • Updated to Sigtool so that the --vba option will extract VBA code from Microsoft Office documents the same way that libclamav extracts VBA. This resolves several issues where Sigtool could not extract VBA. Sigtool will also now display the normalized VBA code instead of the pre-normalized VBA code.

  • Added a new ClamScan and ClamD option: --fail-if-cvd-older-than=days. Additionally, we introduce FailIfCvdOlderThan as a clamd.conf synonym for --fail-if-cvd-older-than. When passed, it causes ClamD to exit on startup with a non-zero return code if the virus database is older than the specified number of days.

  • Added a new function cl_cvdgetage() to the libclamav API. This function will retrieve the age in seconds of the youngest file in a database directory, or the age of a single CVD (or CLD) file.

  • Added a new function cl_engine_set_clcb_vba() to the libclamav API. Use this function to set a cb_vba callback function. The cb_vba callback function will be run whenever VBA is extracted from office documents. The provided data will be a normalized copy of the extracted VBA. This callback was added to support Sigtool so that it can use the same VBA extraction logic that ClamAV uses to scan documents.

Other improvements

  • Removed the vendored TomsFastMath library in favor of using OpenSSL to perform "big number"/multiprecision math operations. Work courtesy of Sebastian Andrzej Siewior.

  • Build system: Added CMake option DO_NOT_SET_RPATH to avoid setting RPATH on Unix systems. Feature courtesy of Sebastian Andrzej Siewior.

  • Build system: Enabled version-scripts with CMake to limit symbol exports for libclamav, libfreshclam, libclamunrar_iface, and libclamunrar shared libraries on Unix systems, excluding macOS. Improvement courtesy of Orion Poplawski and Sebastian Andrzej Siewior.

  • Build system: Enabled users to pass in custom Rust compiler flags using the RUSTFLAGS CMake variable. Feature courtesy of Orion Poplawski.

  • Removed a hard-coded alert for CVE-2004-0597. The CVE is old enough that it is no longer a threat and the detection had occasional false-positives.

  • Set Git attributes to prevent Git from altering line endings for Rust vendored libraries. Third-party Rust libraries are bundled in the ClamAV release tarball. We do not commit them to our own Git repository, but community package maintainers may now store the tarball contents in Git. The Rust build system verifies the library manifest, and this change ensures that the hashes are correct. Improvement courtesy of Nicolas R.

  • Fixed compile time warnings. Improvement courtesy of Răzvan Cojocaru.

  • Added a minor optimization when matching domain name regex signatures for PDB, WDB and CDB type signatures.

  • Build system: Enabled the ability to select a specific Python version. When building, you may use the CMake option -D PYTHON_FIND_VER=<version> to choose a specific Python version. Feature courtesy of Matt Jolly.

  • Added improvements to the ClamOnAcc process log output so that it is easier to diagnose bugs.

  • Windows: Enabled the MSI installer to upgrade between feature versions more easily when ClamAV is installed to a location different from the default (i.e., not C:\Program Files\ClamAV). This means that the MSI installer can find a previous ClamAV 1.0.x installation to upgrade to ClamAV 1.1.0.

  • Sigtool: Added the ability to change the location of the temp directory using the --tempdir option and added the ability to retain the temp files created by Sigtool using the --leave-temps option.

  • Other minor improvements.

Bug fixes

Acknowledgments

Special thanks to the following people for code contributions and bug reports:

  • Craig Andrews
  • Ged Haywood
  • Matt Jolly
  • Orion Poplawski
  • Nicolas R.
  • Răzvan Cojocaru
  • Red
  • Shawn Iverson
  • Sebastian Andrzej Siewior
  • The OSS-Fuzz project
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Tuesday, November 15, 2022

Second ClamAV 1.0.0 release candidate AND updated packages for 0.105.1

Today we are publishing a second release candidate for ClamAV 1.0.0. If you didn't get a chance to test the 1.0.0 release candidate yet, please have a look before we publish the stable release. You can find the ClamAV 1.0.0-rc2 release candidate files on the ClamAV.net Downloads page.

We expect to publish the stable 1.0.0 release in two weeks.

Today we are also publishing updated packages for ClamAV 0.105.1.

Why we updated the 0.105.1 packages, again

On October 31st, we repackaged all currently supported ClamAV versions to patch the bundled libxml2 and zlib library dependencies. For 0.105.1, this was intended to also include bug fixes for the jpeg and tiff Rust-based libraries that are bundled with the source code tarball. Unfortunately, those fixes were not all release-ready in time for the 0.105.1-2 packages. We have fixed the issue and are now publishing a third revision for ClamAV 0.105.1 packages.

Where to find the updated packages

The new packages have a "-3" suffix to indicate the package revision. For example, clamav-0.105.1-3.macos.universal.pkg is the updated package replacing clamav-0.105.1-2.macos.universal.pkg.

As always, you can get the updated packages from the ClamAV.net Downloads page. The original packages have been hidden on the web page and replaced by the updated packages. If you need the originals, the URLs to download them still work.

1.0.0-rc2 release notes

ClamAV 1.0.0-rc2 includes the following improvements and changes.

Major changes:

  • Support for decrypting read-only OLE2-based XLS files that are encrypted with the default password. Use of the default password will now appear in the metadata JSON.

  • Overhauled the implementation of the all-match feature. The newer code is more reliable and easier to maintain.

    • This project fixed several known issues with signature detection in all- match mode:

      • Enabled embedded file-type recognition signatures to match when a malware signature also matched in a scan of the same layer.

      • Enabled bytecode signatures to run in all-match mode after a match has occurred.

      • Fixed an assortment of all-match edge case issues.

    • Added multiple test cases to verify correct all-match behavior.

    • GitHub pull request: https://github.com/Cisco-Talos/clamav/pull/687

  • Added a new callback to the public API for inspecting file content during a scan at each layer of archive extraction.

    • The new callback function type is clcb_file_inspection defined in clamav.h.

    • The function cl_engine_set_clcb_file_inspection() may be used to enable the callback prior to performing a scan.

    • This new callback is to be considered unstable for the 1.0 release. We may alter this function in a subsequent feature version.

    • GitHub pull request: https://github.com/Cisco-Talos/clamav/pull/170

  • Added a new function to the public API for unpacking CVD signature archives.

    • The new function is cl_cvdunpack(). The last parameter for the function may be set to verify if a CVD's signature is valid before unpacking the CVD content to the destination directory.

    • GitHub pull request: https://github.com/Cisco-Talos/clamav/pull/690

  • The option to build with an external TomsFastMath library has been removed. ClamAV requires non-default build options for TomsFastMath to support bigger floating point numbers. Without this change, database and Windows EXE/DLL authenticode certificate validation may fail. The ENABLE_EXTERNAL_TOMSFASTMATH build is now ignored.

Other improvements:

  • Add checks to limit PDF object extraction recursion.

  • Increased the limit for memory allocations based on untrusted input and altered the warning message when the limit is exceeded so that it is more helpful and less dramatic.

  • Dramatically improved the build time of libclamav-Rust unit tests. The unit test build is included in the time limit for the test itself and was timing out on slower systems. The ClamAV Rust code modules now share the same build directory, which also reduces the amount of disk space used for the build.

  • For Windows: The debugging symbol (PDB) files are now installed alongside the DLL and LIB library files when built in "RelWithDebInfo" or "Debug" mode.

  • Increased the time limit in FreshClam before warning if the DNS entry is stale. In combination with changes to update the DNS entry more frequently, this should prevent false alarms of failures in the database publication system.

  • Docker: The C library header files are now included in the Docker image. Patch courtesy of GitHub user TerminalFi.

  • Show the BYTECODE_RUNTIME build options when using the ccmake GUI for CMake. Patch courtesy of Дилян Палаузов.

  • Added explicit minimum and maximum supported LLVM versions so that the build will fail if you try to build with a version that is too old or too new and will print a helpful message rather than simply failing to compile because of compatibility issues. Patch courtesy of Matt Jolly.

Bug fixes:

Acknowledgments

Special thanks to the following people for code contributions and bug reports:

  • Ben Bodenmiller

  • Дилян Палаузов

  • Liam Jarvis

  • Matt Jolly

  • monkz

  • teoberi

  • TerminalFi

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Tuesday, October 25, 2022

ClamAV 1.0.0 release candidate now available



We are excited to announce the ClamAV 1.0.0 release candidate!

You may find the source code and installers for this release on:

Note: If you are looking for the source code on clamav.net/downloads - there is an issue preventing the "Source" section from showing for release candidates. Until we fix this issue, you find it under the "Linux" section. 

Tip: If you are downloading the source from the GitHub release page, the package labeled "clamav-1.0.0-rc.tar.gz" does not require an internet connection to build.  All dependencies are included in this package.  But if you download the ZIP or TAR.GZ generated by GitHub, located at the very bottom, then an internet connection will be required during the build to download additional Rust dependencies.

For Docker users, there is no specific Docker tag for the release candidate, but you can use the clamav:unstable or clamav:unstable_base tags.

The release candidate phase is expected to last two to three weeks before we publish the stable release or a second release candidate. Please take this time to evaluate ClamAV 1.0.0.  

Please help us validate this release by providing feedback via the ClamAV mailing list or on our Discord.

ClamAV 1.0.0 includes the following improvements and changes.

Major changes

  • Support for decrypting read-only OLE2-based XLS files that are encrypted with the default "VelvetSweatshop" password. Use of the VelvetSweatshop password will now appear in the metadata JSON.

  • Overhauled the implementation of the all-match feature. The newer code is more reliable and easier to maintain.

    • This project fixed several known issues with signature detection in all- match mode:
      • Enabled embedded file-type-recognition-signatures to match when a malware signature also matched in a scan of the same layer.
      • Enabled bytecode signatures to run in all-match mode after a match has occurred.
      • Fixed an assortment of all-match edge case issues:
    • Added multiple test cases to verify correct all-match behavior.
    • GitHub pull request: https://github.com/Cisco-Talos/clamav/pull/687

  • Added a new callback to the public API for inspecting file content during a scan at each layer of archive extraction.

    • The new callback function type is clcb_file_inspection defined in clamav.h.
    • The function cl_engine_set_clcb_file_inspection() may be used to enable the callback prior to performing a scan.
    • This new callback is to be considered unstable for the 1.0 release. We may alter this function in a subsequent feature version.
    • GitHub pull request: https://github.com/Cisco-Talos/clamav/pull/170

  • Added a new function to the public API for unpacking CVD signature archives.

    • The new function is cl_cvdunpack(). The last parameter for the function may be set to verify if a CVD's signature is valid before unpacking the CVD content to the destination directory.
    • GitHub pull request: https://github.com/Cisco-Talos/clamav/pull/690

Other improvements

  • Add checks to limit PDF object extraction recursion.

  • Increased the limit for memory allocations based on untrusted input and altered the warning message when the limit is exceeded so that it is more helpful and less dramatic.

  • Dramatically improved the build time of libclamav-Rust unit tests. The unit test build is included in the time limit for the test itself and was timing out on slower systems. The ClamAV Rust code modules now share the same build directory, which also reduces the amount of disk space used for the build.

  • Windows: The debugging symbol (PDB) files are now installed alongside the DLL

  • and LIB library files when built in "RelWithDebInfo" or "Debug" mode.

  • Relaxed the constraints on the check for overlapping ZIP file entries so as not to alert on slightly malformed, but non-malicious, Java (JAR) archives.

  • Increased the time limit in FreshClam before warning if the DNS entry is stale. In combination with changes to update the DNS entry more frequently, this should prevent false alarms of failures in the database publication system.

  • Docker: The C library header files are now included in the Docker image. Patch courtesy of GitHub user TerminalFi.

  • Show the BYTECODE_RUNTIME build options when using the ccmake GUI for CMake. Patch courtesy of Дилян Палаузов.

  • Added explicit minimum and maximum supported LLVM versions so that the build will fail if you try to build with the version that is too old or too new and will print a helpful message rather than simply failing to compile because of compatibility issues. Patch courtesy of Matt Jolly.

Bug fixes

Acknowledgments

Special thanks to the following people for code contributions and bug reports:

  • Ben Bodenmiller
  • Дилян Палаузов
  • Liam Jarvis
  • Matt Jolly
  • monkz
  • teoberi
  • TerminalFi
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