You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@pdfbox.apache.org by "Tilman Hausherr (Jira)" <ji...@apache.org> on 2022/03/21 17:07:00 UTC
[jira] [Commented] (PDFBOX-5395) Hangup in COSFilterInputStream.nextRange
[ https://issues.apache.org/jira/browse/PDFBOX-5395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17510015#comment-17510015 ]
Tilman Hausherr commented on PDFBOX-5395:
-----------------------------------------
Can you share such a file? My guess is that the range contains some bad values, and I'd just throw an IOException with details.
> Hangup in COSFilterInputStream.nextRange
> ----------------------------------------
>
> Key: PDFBOX-5395
> URL: https://issues.apache.org/jira/browse/PDFBOX-5395
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.25
> Reporter: Aleksej Kozlov
> Priority: Major
>
> On some broken PDFs call _PDSignature.getSignedContent_ never returns.
> After exploring stacktrace I've found cycle in _COSFilterInputStream.nextRange_.
> {code:java}
> while (this.position < this.ranges[this.range][0])
> {
> long skipped = super.skip(this.ranges[this.range][0] - this.position);
> this.position += skipped;
> }
> {code}
> Javadoc for _skip_ says _"The skip method may, for a variety ofreasons, end up skipping over some smaller number of bytes, possibly 0."_
> So, when _skip_ returns 0 this cycle became infinite.
> Tried in versions 2.0.25 and 3.0.0-RC1.
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@pdfbox.apache.org
For additional commands, e-mail: dev-help@pdfbox.apache.org