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https://issues.apache.org/jira/browse/PDFBOX-5798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17833598#comment-17833598
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ASF subversion and git services commented on PDFBOX-5798:
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Commit 1916787 from Tilman Hausherr in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1916787 ]
PDFBOX-5798: use MessageDigest.isEqual() to prevent timing attacks
> Observable Timing Discrepancy (Timing Attack)
> ---------------------------------------------
>
> Key: PDFBOX-5798
> URL: https://issues.apache.org/jira/browse/PDFBOX-5798
> Project: PDFBox
> Issue Type: Bug
> Reporter: Simon Steiner
> Priority: Major
>
> A static analyse tool is reporting:
> An attacker can guess the secret value of digest because it is compared using
> java.util.Arrays.equals, which is vulnerable to timing attacks. Use
> java.security.MessageDigest.isEqual to compare values securely.
> pdfbox/src/main/java/org/apache/pdfbox/pdmodel/encryption/StandardSecurityHandler.java
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