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[ GLSA 200508-08 ] Xpdf, Kpdf, GPdf: Denial of Service vulnerability
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GLSA
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PostPosted: Thu Aug 18, 2005 9:47 am    Post subject: [ GLSA 200508-08 ] Xpdf, Kpdf, GPdf: Denial of Service vulne Reply with quote

Gentoo Linux Security Advisory

Title: Xpdf, Kpdf, GPdf: Denial of Service vulnerability (GLSA 200508-08)
Severity: normal
Exploitable: remote
Date: August 16, 2005
Bug(s): #99769, #100263, #100265
ID: 200508-08

Synopsis

Xpdf, Kpdf and GPdf may crash as a result of a Denial of Service vulnerability.

Background

Xpdf, Kpdf and GPdf are PDF file viewers that run under the X Window System. Kpdf and GPdf both contain Xpdf code. Kpdf is also part of kdegraphics.

Affected Packages

Package: app-text/xpdf
Vulnerable: < 3.00-r10
Unaffected: >= 3.00-r10
Architectures: All supported architectures

Package: kde-base/kdegraphics
Vulnerable: < 3.3.2-r3
Unaffected: >= 3.3.2-r3
Architectures: All supported architectures

Package: kde-base/kpdf
Vulnerable: < 3.4.1-r1
Unaffected: >= 3.4.1-r1
Architectures: All supported architectures

Package: app-text/gpdf
Vulnerable: < 2.10.0-r1
Unaffected: >= 2.10.0-r1
Architectures: All supported architectures


Description

Xpdf, Kpdf and GPdf do not handle a broken table of embedded TrueType fonts correctly. After detecting such a table, Xpdf, Kpdf and GPdf attempt to reconstruct the information in it by decoding the PDF file, which causes the generation of a huge temporary file.

Impact

A remote attacker may cause a Denial of Service by creating a specially crafted PDF file, sending it to a CUPS printing system (which uses Xpdf), or by enticing a user to open it in Xpdf, Kpdf, or GPdf.

Workaround

There is no known workaround at this time.

Resolution

All Xpdf users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/xpdf-3.00-r10"
All GPdf users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/gpdf-2.10.0-r1"
All Kpdf users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=kde-base/kdegraphics-3.3.2-r3"
All KDE Split Ebuild Kpdf users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=kde-base/kpdf-3.4.1-r1"


References

CAN-2005-2097


Last edited by GLSA on Sun May 07, 2006 4:58 pm; edited 1 time in total
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