Bug 441722 - (CVE-2008-1693) CVE-2008-1693 xpdf: embedded font vulnerability
CVE-2008-1693 xpdf: embedded font vulnerability
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
source=vendor-sec,reported=20080407,p...
: Security
: 442375 (view as bug list)
Depends On: 442388 442389 442390 442391 442392 442393 443026 444148 444149
Blocks:
  Show dependency treegraph
 
Reported: 2008-04-09 13:18 EDT by Tomas Hoger
Modified: 2009-10-14 09:51 EDT (History)
11 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2008-05-22 03:12:12 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Patch for xpdf from Ludwig Nussel (604 bytes, patch)
2008-04-09 13:20 EDT, Tomas Hoger
no flags Details | Diff
Poppler type-checking patch from kees cook (4.71 KB, patch)
2008-04-15 04:49 EDT, Lubomir Kundrak
no flags Details | Diff

  None (edit)
Description Tomas Hoger 2008-04-09 13:18:23 EDT
Kees Cook of Ubuntu noticed that potential vulnerability allowing arbitrary code
execution via a corrupted PDF embedded fonts was fixed in xpdf code in xpdf 3.02
and poppler 0.6.2.

Fix is mentioned in xpdf changelog - http://www.foolabs.com/xpdf/CHANGES:

"Check for a broken/missing embedded font (this was causing xpdf to crash)."

and is available in poppler source code:

http://gitweb.freedesktop.org/?p=poppler/poppler.git;a=commitdiff;h=1a531dcfee1c6fc79a414c38cbe7327fbf9a59d8
Comment 1 Tomas Hoger 2008-04-09 13:20:47 EDT
Created attachment 301852 [details]
Patch for xpdf from Ludwig Nussel
Comment 7 Lubomir Kundrak 2008-04-14 12:19:14 EDT
This is affected:

xpdf         EL4 Exploitable via SplashOutputDev::updateFont
poppler      EL5 Exploitable via CairoFont::create (evince)
kdegraphics  EL4 Exploitable via SplashOutputDev::updateFont (kpdf)

Tools without graphical output (such as pdftops, from cups, teTeX) are not
vulnerable. Newer kpdf seems to use its own output device implementation.
Comment 12 Lubomir Kundrak 2008-04-15 04:49:08 EDT
Created attachment 302425 [details]
Poppler type-checking patch from kees cook
Comment 15 Tomas Hoger 2008-04-18 02:43:14 EDT
Plublic now, lifting embargo:

http://www.ubuntu.com/usn/usn-603-1
Comment 16 Tomas Hoger 2008-04-18 04:08:36 EDT
Short status of Fedora packages:

- xpdf - not affected, fixed upstream version 3.02 is shipped
- poppler - not affected in F8+, fixed upstream versions 0.6.2+ are shipped
- kdegraphics/kpdf - not affected (see comment #7)
- koffice - not affected, xpdf code only used for import, not for displaying
Comment 17 Tomas Hoger 2008-04-18 04:25:51 EDT
Ubuntu security advisory for koffice / kword http://www.ubuntu.com/usn/usn-603-2
adds patch in comment #12, which adds preventive checks, which should prevent
exploitation of similar issues in the future, that may affect kword import
filter as well.
Comment 19 Kevin Kofler 2008-04-18 06:01:30 EDT
Okular in KDE 4 uses the system poppler, so kdegraphics in F9 definitely does 
not need a patch. For F7 and F8, I'll take Lubomir Kundrak's word that it is 
not affected.
Comment 20 Fedora Update System 2008-04-24 12:14:06 EDT
poppler-0.5.4-9.fc7 has been submitted as an update for Fedora 7
Comment 22 Fedora Update System 2008-04-29 16:50:47 EDT
poppler-0.5.4-9.fc7 has been pushed to the Fedora 7 stable repository.  If problems still persist, please make note of it in this bug report.

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