6. CVE-2024-27280: Buffer overread vulnerability in StringIO

CVE-2024-27280: Buffer overread vulnerability in StringIO


  • We have released the StringIO gem version 3.0.1.1 and 3.0.1.2 that have a security fix for a buffer overread vulnerability. This vulnerability has been assigned the CVE identifier CVE-2024-27280.

    Details

    An issue was discovered in StringIO 3.0.1, as distributed in Ruby 3.0.x through 3.0.6 and 3.1.x through 3.1.4.

    The ungetbyte and ungetc methods on a StringIO can read past the end of a string, and a subsequent call to StringIO.gets may return the memory value.

    This vulnerability is not affected StringIO 3.0.3 and later, and Ruby 3.2.x and later.

    Recommended action

    We recommend to update the StringIO gem to version 3.0.3 or later. In order to ensure compatibility with bundled version in older Ruby series, you may update as follows instead:

    • For Ruby 3.0 users: Update to stringio 3.0.1.1
    • For Ruby 3.1 users: Update to stringio 3.0.1.2

    Note: hat StringIO 3.0.1.2 contains not only the fix for this vulnerability but also a bugfix for [[Bug #19389]][https://github.com/ruby/ruby/commit/1d24a931c458c93463da1d5885f33edef3677cc2].

    You can use gem update stringio to update it. If you are using bundler, please add gem "stringio", ">= 3.0.1.2" to your Gemfile.

    Affected versions

    • Ruby 3.0.6 or lower
    • Ruby 3.1.4 or lower
    • StringIO gem 3.0.2 or lower

    Credits

    Thanks to david_h1 for discovering this issue.

    History

    • Originally published at 2024-03-21 4:00:00 (UTC)

    Posted by hsbt on 21 Mar 2024



    https://www.ruby-lang.org/en/news/2024/03/21/buffer-overread-cve-2024-27280/
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