January 2006
Two Gentoo Linux Security Advisories: 1. GLSA 200601-16 - MyDNS: Denial of Service 2. GLSA 200601-17 - Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap overflows
ID: 00099
Ref: 98/2006
Date: 31 January 2006:14:21:54
Version: 1
Title: Two Gentoo Linux Security Advisories: 1. GLSA 200601-16 - MyDNS: Denial of Service 2. GLSA 200601-17 - Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap overflows
Abstract:
Vendors affected: Gentoo
Operating systems affected: Gentoo
Applications affected: Gentoo
Title
=====
Two Gentoo Linux Security Advisories:
1. GLSA 200601-16 - MyDNS: Denial of Service
2. GLSA 200601-17 - Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap overflows
Detail
======
1. MyDNS contains an unspecified flaw that may allow a remote Denial of
Service.
2. Chris Evans has reported some integer overflows in Xpdf when attempting
to calculate buffer sizes for memory allocation, leading to a heap
overflow and a potential infinite loop when handling malformed input
files.
1.
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Gentoo Linux Security Advisory GLSA 200601-16
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http://security.gentoo.org/
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Severity: Normal
Title: MyDNS: Denial of Service
Date: January 30, 2006
Bugs: #119548
ID: 200601-16
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Synopsis
========
MyDNS contains a vulnerability that may lead to a Denial of Service
attack.
Background
==========
MyDNS is a DNS server using a MySQL database as a backend. It is
designed to allow for fast updates and small resource usage.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-dns/mydns < 1.1.0 >= 1.1.0
Description
===========
MyDNS contains an unspecified flaw that may allow a remote Denial of
Service.
Impact
======
An attacker could cause a Denial of Service by sending malformed DNS
queries to the MyDNS server.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All MyDNS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/mydns-1.1.0"
References
==========
[ 1 ] CVE-2006-0351
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0351
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200601-16.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2006 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.0
2.
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Gentoo Linux Security Advisory GLSA 200601-17
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http://security.gentoo.org/
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Severity: Normal
Title: Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap
overflows
Date: January 30, 2006
Bugs: #117481, #117494, #117495, #115789, #118665
ID: 200601-17
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Synopsis
========
Xpdf, Poppler, GPdf, libextractor and pdftohtml are vulnerable to
integer overflows that may be exploited to execute arbitrary code.
Background
==========
Xpdf is a PDF file viewer that runs under the X Window System. Poppler
is a PDF rendering library based on the Xpdf 3.0 code base. GPdf is a
PDF file viewer for the GNOME 2 platform, also based on Xpdf.
libextractor is a library which includes Xpdf code to extract arbitrary
meta-data from files. pdftohtml is a utility to convert PDF files to
HTML or XML formats that makes use of Xpdf code to decode PDF files.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-text/xpdf < 3.01-r5 >= 3.01-r5
2 app-text/poppler < 0.4.3-r4 >= 0.4.3-r4
3 app-text/gpdf < 2.10.0-r3 >= 2.10.0-r3
4 media-libs/libextractor < 0.5.9 >= 0.5.9
5 app-text/pdftohtml < 0.36-r4 Vulnerable!
-------------------------------------------------------------------
NOTE: Certain packages are still vulnerable. Users should migrate
to another package if one is available or wait for the
existing packages to be marked stable by their
architecture maintainers.
-------------------------------------------------------------------
5 affected packages on all of their supported architectures.
-------------------------------------------------------------------
Description
===========
Chris Evans has reported some integer overflows in Xpdf when attempting
to calculate buffer sizes for memory allocation, leading to a heap
overflow and a potential infinite loop when handling malformed input
files.
Impact
======
By sending a specially crafted PDF file to a victim, an attacker could
cause an overflow, potentially resulting in the execution of arbitrary
code with the privileges of the user running the application.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Xpdf users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/xpdf-3.01-r5"
All Poppler users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/poppler-0.4.3-r4"
All GPdf users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/gpdf-2.10.0-r3"
All libextractor users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libextractor-0.5.9"
All pdftohtml users should migrate to the latest stable version of
Poppler.
References
==========
[ 1 ] CVE-2005-3627
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3627
[ 2 ] CVE-2005-3626
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3626
[ 3 ] CVE-2005-3625
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3625
[ 4 ] CVE-2005-3624
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3624
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200601-17.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2006 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.0