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Security Flaws Discovered, Patched in Ruby 1.8 and 1.9

Late last week, Drew Yao of Apple Product Security apparently discovered several vulnerabilities in multiple versions of Ruby that could allow attackers to execute arbitrary code or create a denial of service condition.

The vulnerabilities stemmed from unchecked overflow conditions in several array-handling routines, and from an unsafe memory allocation in Ruby's string processing. The Ruby maintainers have since released patches for these vulnerabilities. Vulnerable versions include:

  • 1.8.4 and all prior versions
  • 1.8.5-p230 and all prior versions
  • 1.8.6-p229 and all prior versions
  • 1.8.7-p21 and all prior versions
  • 1.9.0-1 and all prior versions

Patches are available here: /2008/06/20/arbitrary-code-execution-vulnerabilities/

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