Poppler, KDE: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200711-22 / poppler koffice kword kdegraphics kpdf
Release Date	November 18, 2007
Latest Revision	November 18, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-text/poppler	< 0.6.1-r1	>= 0.6.1-r1	All supported architectures
kde-base/kpdf	< 3.5.8-r1	revision >= 3.5.7-r3, >= 3.5.8-r1	All supported architectures
kde-base/kdegraphics	< 3.5.8-r1	revision >= 3.5.7-r3, >= 3.5.8-r1	All supported architectures
app-office/kword	< 1.6.3-r2	>= 1.6.3-r2	All supported architectures
app-office/koffice	< 1.6.3-r2	>= 1.6.3-r2	All supported architectures

Related bugreports: #196735, #198409

Synopsis

Poppler and various KDE components are vulnerable to multiple memory management issues possibly resulting in the execution of arbitrary code.

2. Impact Information

Background

Poppler is a cross-platform PDF rendering library originally based on Xpdf. KOffice is an integrated office suite for KDE. KWord is the KOffice word processor. KPDF is a KDE-based PDF viewer included in the kdegraphics package.

Description

Alin Rad Pop (Secunia Research) discovered several vulnerabilities in the "Stream.cc" file of Xpdf: An integer overflow in the DCTStream::reset() method and a boundary error in the CCITTFaxStream::lookChar() method, both leading to heap-based buffer overflows (CVE-2007-5392, CVE-2007-5393). He also discovered a boundary checking error in the DCTStream::readProgressiveDataUnit() method causing memory corruption (CVE-2007-4352). Note: Gentoo's version of Xpdf is patched to use the Poppler library, so the update to Poppler will also fix Xpdf.

Impact

By enticing a user to view or process a specially crafted PDF file with KWord or KPDF or a Poppler-based program such as Gentoo's viewers Xpdf, ePDFView, and Evince or the CUPS printing system, a remote attacker could cause an overflow, potentially resulting in the execution of arbitrary code with the privileges of the user running the application.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Poppler users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/poppler-0.6.1-r1"

All KPDF users should upgrade to the latest version:

Code Listing 3.2: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=kde-base/kpdf-3.5.7-r3"

All KDE Graphics Libraries users should upgrade to the latest version:

Code Listing 3.3: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=kde-base/kdegraphics-3.5.7-r3"

All KWord users should upgrade to the latest version:

Code Listing 3.4: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-office/kword-1.6.3-r2"

All KOffice users should upgrade to the latest version:

Code Listing 3.5: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-office/koffice-1.6.3-r2"

4. References

Page updated November 18, 2007

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.