Sourced from The Ruby Advisory Database.

Denial of Service in rubyzip ("zip bombs") In Rubyzip before 1.3.0, a crafted ZIP file can bypass application checks on ZIP entry sizes because data about the uncompressed size can be spoofed. This allows attackers to cause a denial of service (disk consumption).

Patched versions: >= 1.3.0 Unaffected versions: none

Sourced from The Ruby Advisory Database.

Directory Traversal in rubyzip rubyzip version 1.2.1 and earlier contains a Directory Traversal vulnerability in Zip::File component that can result in write arbitrary files to the filesystem. If a site allows uploading of .zip files, an attacker can upload a malicious file which contains symlinks or files with absolute pathnames "../" to write arbitrary files to the filesystem.

Patched versions: >= 1.2.2 Unaffected versions: none

Sourced from rubyzip's releases.

v1.3.0

Security

• Add validate_entry_sizes option so that callers can trust an entry's reported size when using extract #403
  • This option defaults to false for backward compatibility in this release, but you are strongly encouraged to set it to true. It will default to true in rubyzip 2.0.

New Feature

• Add add_stored method to simplify adding entries without compression #366

Tooling / Documentation

• Add more gem metadata links #402

v1.2.4

• Do not rewrite zip files opened with open_buffer that have not changed #360

Tooling / Documentation

• Update example_recursive.rb in README #397
• Hold CI at trusty for now, automatically pick the latest ruby patch version, use rbx-4 and hold jruby at 9.1 #399

v1.2.3

• Allow tilde in zip entry names #391 (fixes regression in 1.2.2 from #376)
• Support frozen string literals in more files #390
• Require pathname explicitly #388 (fixes regression in 1.2.2 from #376)

Tooling / Documentation:

• CI updates #392, #394
  • Bump supported ruby versions and add 2.6
  • JRuby failures are no longer ignored (reverts #375 / part of #371)
• Add changelog entry that was missing for last release #387
• Comment cleanup #385

Since the GitHub release information for 1.2.2 is missing, I will also include it here:

1.2.2

NB: This release drops support for extracting symlinks, because there was no clear way to support this securely. See rubyzip/rubyzip#376 for details.

• Fix CVE-2018-1000544 #376 / #371
• Fix NoMethodError: undefined method `glob' #363
• Fix handling of stored files (i.e. files not using compression) with general purpose bit 3 set #358
• Fix close on StringIO-backed zip file #353
• Add Zip.force_entry_names_encoding option #340
• Update rubocop, apply auto-fixes, and fix regressions caused by said auto-fixes #332, #355
• Save temporary files to temporary directory (rather than current directory) #325

Tooling / Documentation:

... (truncated)

Sourced from rubyzip's changelog.

1.3.0 (2019-09-25)

Security

• Add validate_entry_sizes option so that callers can trust an entry's reported size when using extract #403
  • This option defaults to false for backward compatibility in this release, but you are strongly encouraged to set it to true. It will default to true in rubyzip 2.0.

New Feature

• Add add_stored method to simplify adding entries without compression #366

Tooling / Documentation

• Add more gem metadata links #402

1.2.4 (2019-09-06)

• Do not rewrite zip files opened with open_buffer that have not changed #360

Tooling / Documentation

• Update example_recursive.rb in README #397
• Hold CI at trusty for now, automatically pick the latest ruby patch version, use rbx-4 and hold jruby at 9.1 #399

1.2.3

• Allow tilde in zip entry names #391 (fixes regression in 1.2.2 from #376)
• Support frozen string literals in more files #390
• Require pathname explicitly #388 (fixes regression in 1.2.2 from #376)

Tooling / Documentation:

• CI updates #392, #394
  • Bump supported ruby versions and add 2.6
  • JRuby failures are no longer ignored (reverts #375 / part of #371)
• Add changelog entry that was missing for last release #387
• Comment cleanup #385

1.2.2

NB: This release drops support for extracting symlinks, because there was no clear way to support this securely. See rubyzip/rubyzip#376 for details.

• Fix CVE-2018-1000544 #376 / #371
• Fix NoMethodError: undefined method `glob' #363
• Fix handling of stored files (i.e. files not using compression) with general purpose bit 3 set #358
• Fix close on StringIO-backed zip file #353
• Add Zip.force_entry_names_encoding option #340
• Update rubocop, apply auto-fixes, and fix regressions caused by said auto-fixes #332, #355
• Save temporary files to temporary directory (rather than current directory) #325

... (truncated)

• e79d9ea Merge pull request #407 from rubyzip/v1-3-0
• 7c65e1e Bump version to 1.3.0
• d65fe7b Merge pull request #403 from rubyzip/check-size
• 97cb6ae Warn when an entry size is invalid
• 7849f73 Default validate_entry_sizes to false for 1.3 release
• 4167f0c Validate entry sizes when extracting
• 94b7fa2 [ci skip] Update changelog
• 93505ca Check expected entry size in add_stored test
• 6619bf3 Merge pull request #366 from hainesr/add-stored
• ecb2776 Zip::File.add_stored() to add uncompressed files.
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