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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (Jira)" <ji...@apache.org> on 2022/09/28 06:38:00 UTC

[jira] [Created] (PDFBOX-5521) Signing tries to set byteRange of old signature

Tilman Hausherr created PDFBOX-5521:
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             Summary: Signing tries to set byteRange of old signature
                 Key: PDFBOX-5521
                 URL: https://issues.apache.org/jira/browse/PDFBOX-5521
             Project: PDFBox
          Issue Type: Bug
          Components: Signing
    Affects Versions: 2.0.27
            Reporter: Tilman Hausherr
            Assignee: Tilman Hausherr
             Fix For: 2.0.28, 3.0.0 PDFBox


A long bug report on the users mailing lists leads to the finding that the COSWriter code hits an "old" signature that is (for whatever reason, maybe it was incorrectly included) present in the incremental part. The signing then fails because the byte range to be written is longer than the existing byte range.

To avoid this, we improve signature detection by checking that the size indicated by byteRange is higher than the existing PDF size.



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