Bug 454277 (CVE-2008-2950)

Summary:

CVE-2008-2950 poppler: uninitialized pointer free (oCERT-2008-007)

Product:

[Other] Security Response

Reporter:

Tomas Hoger <thoger>

Component:

vulnerability

Assignee:

Red Hat Product Security <security-response-team>

Status:

CLOSED ERRATA

QA Contact:

Severity:

high

Docs Contact:

Priority:

high

Version:

unspecified

CC:

krh, leonard-rh-bugzilla

Target Milestone:

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Keywords:

Security

Target Release:

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Hardware:

All

OS:

Linux

Whiteboard:

Fixed In Version:

Doc Type:

Bug Fix

Doc Text:

Story Points:

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Clone Of:

Environment:

Last Closed:

2008-09-11 17:19:27 UTC

Type:

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Regression:

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Mount Type:

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Documentation:

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CRM:

Verified Versions:

Category:

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oVirt Team:

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RHEL 7.3 requirements from Atomic Host:

Cloudforms Team:

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Target Upstream Version:

Embargoed:

Bug Depends On:

454288, 454289, 454290

Bug Blocks:

Attachments:

Description	Flags
Proposed patch	none

Description Tomas Hoger 2008-07-07 13:18:33 UTC

Quoting upcoming oCERT advisory:

The poppler PDF rendering library suffers a memory management bug which leads
to arbitrary code execution.

The vulnerability is present in the Page class constructor/destructor. The
pageWidgets object is not initialized in the Page constructor if specific
conditions are met, but it is deleted afterwards in the destructor regardless
of its initialization.

oCERT advisory credits: Felipe Andres Manzano

Advisory:
http://www.ocert.org/advisories/ocert-2008-007.html

Comment 1 Tomas Hoger 2008-07-07 13:19:51 UTC

Created attachment 311147 [details]
Proposed patch

Comment 3 Tomas Hoger 2008-07-07 14:16:06 UTC

Public now via:

http://www.openwall.com/lists/oss-security/2008/07/07/3
http://www.ocert.org/advisories/ocert-2008-007.html

Comment 5 Tomas Hoger 2008-07-07 15:03:19 UTC

This issue did not affect version of poppler as shipped in Red Hat Enterprise
Linux 5, or other PDF parsing applications derived from xpdf as shipped in Red
Hat Enterprise Linux 2.1, 3, 4, and 5.

Comment 6 Tomas Hoger 2008-07-09 12:04:58 UTC

Detailed description and public PoC by Felipe Andres Manzano:

  http://marc.info/?l=full-disclosure&m=121556059918963&w=4

Comment 7 Fedora Update System 2008-08-01 10:10:39 UTC

poppler-0.6.2-2.fc8 has been submitted as an update for Fedora 8

Comment 8 Fedora Update System 2008-08-01 10:10:57 UTC

poppler-0.8.1-2.fc9 has been submitted as an update for Fedora 9

Comment 9 Fedora Update System 2008-08-07 23:50:34 UTC

poppler-0.8.1-2.fc9 has been pushed to the Fedora 9 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update poppler'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F9/FEDORA-2008-7012

Comment 10 Fedora Update System 2008-08-07 23:57:49 UTC

poppler-0.6.2-2.fc8 has been pushed to the Fedora 8 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 11 Tomas Hoger 2008-09-03 10:41:25 UTC

To further extend comment #5:

As detailed in Felipes advisory [1], this issue occurs when pageWidgets with uninitialized value is freed in Page::~Page() destructor.  pageWidgets was only introduced in poppler in (or around) upstream version 0.6.  The code does not exist in the xpdf, on which poppler is based.

[1] http://marc.info/?l=full-disclosure&m=121556059918963&w=4
    http://www.milw0rm.com/exploits/6032

Comment 12 Fedora Update System 2008-09-11 17:07:14 UTC

poppler-0.8.1-2.fc9 has been pushed to the Fedora 9 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 13 Red Hat Product Security 2008-09-11 17:19:27 UTC

This issue was addressed in:

Fedora:
  https://admin.fedoraproject.org/updates/F8/FEDORA-2008-7104
  https://admin.fedoraproject.org/updates/F9/FEDORA-2008-7012