Bug 872390 - catdoc: buffer overflow flaw
Summary: catdoc: buffer overflow flaw
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 872391 872392
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-11-02 01:22 UTC by Vincent Danen
Modified: 2019-09-29 12:57 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2015-04-13 20:47:10 UTC
Embargoed:

Attachments (Terms of Use)

Description Vincent Danen 2012-11-02 01:22:24 UTC 
A Debian bug report [1] noted that there is a buffer overflow in catdoc's src/xlsparse.c, which contains:

        for (i=0;i<NUMOFDATEFORMATS; i++);
        FormatIdxUsed[i]=0;

Because of the ";" at the end of the first line, it effectively sets i to NUMOFDATEFORMATS, which will cause it to write past defined buffer.  This could lead to a denial of service (crash of catdoc).  The Debian bug report indicates that this could possibly be used for worse things than a crash, but I'm not sure (I can see it writing past the end of the buffer, but all it is writing is 0's and not anything user-defined).

[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=692076
Comment 1 Vincent Danen 2012-11-02 01:23:17 UTC 
Created catdoc tracking bugs for this issue

Affects: fedora-all [bug 872391]
Affects: epel-all [bug 872392]
Comment 4 Fedora Update System 2014-10-28 10:59:30 UTC 
catdoc-0.94.2-10.el5 has been pushed to the Fedora EPEL 5 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 5 Fedora Update System 2014-10-28 11:04:41 UTC 
catdoc-0.94.2-10.el6 has been pushed to the Fedora EPEL 6 stable repository.  If problems still persist, please make note of it in this bug report.
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