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libpng tRNS-chunk Denial of Service Advisory Available in English  Advisory Available in German 

Secunia Advisory: SA25292  
Udsendt: 2007-05-16
Sidste Opdt.: 2007-05-17

Kritisk:
Mindre kritisk
Betydning: DoS
Hvor: Fra Internet
Løsning Status: Producent Patch

Software:libpng 1.x

CVE reference:CVE-2007-2445 (Secunia mirror)

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Beskrivelse:
Der er rapporteret en sårbarhed i libpng, som kan udnyttes af ondsindede personer til at udføre et DoS (Denial of Service).

Sårbarheden skyldes en fejl i funktionen "png_handle_tRNS()" i pngrutil.c og kan udnyttes ved at fortolke en PNG-fil med et specielt udformet tRNS chunk i en applikation, der benytter biblioteket.

Sårbarheden er rapporteret i version 0.90 til og med 1.2.16.

Løsning:
Opdatér til version 1.0.25 eller 1.2.17.

Rapporteret af / Kredit:
Rapporteret af producenten.

Forløb:
17-05-2007: Tilføjede link til US-CERT.

Original Advisory:
http://kent.dl.sourceforge.net/sourceforge/libpng/libpng-1.2.17-ADVISORY.txt

Andre Kilder:
US-CERT VU#684664:
http://www.kb.cert.org/vuls/id/684664



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.

7 Relaterede Secunia Advisories

1. libpng ICC-profilhåndtering Denial of Service
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3. libpng sPLT chunk håndtering Denial of Service
4. libpng "png_set_strip_alpha()" buffer overflow
5. libpng heltals-overflow og buffer overflow sårbarheder
6. libpng flere sårbarheder
7. libpng potentiel Denial of Service sårbarhed


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