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Xpdf "Stream.cc" flere sårbarheder Advisory Available in English  Advisory Available in German 

Secunia Advisory: SA27260  
Udsendt: 2007-11-07
Sidste Opdt.: 2007-11-08

Kritisk:
Meget kritisk
Betydning: Systemadgang
Hvor: Fra Internet
Løsning Status: Producent Patch

Software:Xpdf 3.x

CVE reference:CVE-2007-4352 (Secunia mirror)
CVE-2007-5392 (Secunia mirror)
CVE-2007-5393 (Secunia mirror)

Want to know the next time vulnerabilities are fixed in this product?
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Beskrivelse:
Secunia Research har fundet nogle sårbarheder i Xpdf, som kan udnyttes af ondsindede personer til at kompromittere en brugers system.

1) En array-indekseringsfejl i "DCTStream::readProgressiveDataUnit()" funktionen i xpdf/Stream.cc kan udnyttes til at korrumpere hukommelse via en specielt udformet PDF-fil.

2) Et heltals-overflow i "DCTStream::reset()" funktionen i xpdf/Stream.cc kan udnyttes til at forårsage et heap-baseret buffer overflow via en speicelt udformet PDF-fil.

3) En ikke-kontrolleret buffer i "CCITTFaxStream::lookChar()" funktionen i xpdf/Stream.cc kan udnyttes til at forårsage et heap-baseret buffer overflow ved at lokke en bruger til at åbne et PDF-dokument indeholdende et specielt udformet "CCITTFaxDecode" filter.

Succesfuld udnyttelse muliggør eksekvering af vilkårlig kode.

Sårbarhederne er bekræftet i Xpdf 3.02 med xpdf-3.02pl1.patch. Andre versioner kan også være berørte.

Løsning:
Installér patch xpdf-3.02pl2.patch.
http://www.foolabs.com/xpdf/download.html

Rapporteret af / Kredit:
Alin Rad Pop, Secunia Research.

Forløb:
08-11-2007: Opdaterede løsningen.

Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2007-88/



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

8 Relaterede Secunia Advisories

1. Xpdf StreamPredictor flere sårbarheder
2. Xpdf PDF splash-billedhåndtering buffer overflow
3. xpdf integer overflows
4. Xpdf flere buffer overflow sårbarheder
5. Xpdf oprettelse af midlertidig fil Denial of Service
6. Xpdf "Decrypt::makeFileKey2()" funktion buffer overflow
7. xpdf "doImage()" buffer overflow
8. Xpdf flere heltal-overflow sårbarheder


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