Debians sikkerhedsbulletin

DSA-2032-1 libpng -- flere sårbarheder

Rapporteret den:

11. apr 2010

Berørte pakker:

libpng

Sårbar:

Referencer i sikkerhedsdatabaser:

I Debians fejlsporingssystem: Fejl 533676, Fejl 572308.
I Mitres CVE-ordbog: CVE-2009-2042, CVE-2010-0205.

Yderligere oplysninger:

Flere sårbarheder er opdaget i libpng, et bibliotek til læsning og skrivning af PNG-filer. Projektet Common Vulnerabilities and Exposures har registreret følgende problemer:

CVE-2009-2042
libpng fortolkede ikke på korrekt vis 1-bit interlaced-billeder med breddeværdier, som ikke kan divideres med otte, hvilket fik libpng til at medtage uinitialiserede bit i visse rækker i en PNG-fil, og måske gjorde det muligt for fjernangribere at læse dele af følsom hukommelse via out-of-bounds pixels i filen.
CVE-2010-0205
libpng håndterede ikke på korrekt vis komprimerede ancillary-chunk-data, der har en uforholdsmæssig stor ukomprimeret repræsentation, hvilket gjorde det muligt for fjernangribere at forårsage et lammelsesangreb (hukommelses- og CPU-forbrug samt hængende applikation) via en fabrikeret PNG-fil.

I den stabile distribution (lenny), er disse problemer rettet i version 1.2.27-2+lenny3.

I distributionen testing (squeeze) og i den ustabile (sid) distribution, er disse problemer rettet i version 1.2.43-1.

Vi anbefaler at du opgraderer din libpng-pakke.

Rettet i:

Debian GNU/Linux 5.0 (lenny)

Kildekode:: http://security.debian.org/pool/updates/main/libp/libpng/libpng_1.2.27-2+lenny3.dsc; http://security.debian.org/pool/updates/main/libp/libpng/libpng_1.2.27.orig.tar.gz; http://security.debian.org/pool/updates/main/libp/libpng/libpng_1.2.27-2+lenny3.diff.gz
Arkitekturuafhængig komponent:: http://security.debian.org/pool/updates/main/libp/libpng/libpng3_1.2.27-2+lenny3_all.deb
Alpha:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_alpha.udeb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_alpha.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_alpha.deb
AMD64:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_amd64.udeb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_amd64.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_amd64.deb
ARM:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_arm.udeb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_arm.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_arm.deb
ARM EABI:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_armel.udeb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_armel.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_armel.deb
HP Precision:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_hppa.udeb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_hppa.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_hppa.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_i386.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_i386.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_i386.udeb
Intel IA-64:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_ia64.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_ia64.udeb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_ia64.deb
Little-endian MIPS:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_mipsel.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_mipsel.udeb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_mipsel.deb
PowerPC:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_powerpc.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_powerpc.udeb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_powerpc.deb
IBM S/390:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_s390.udeb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_s390.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_s390.deb
Sun Sparc:: http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0_1.2.27-2+lenny3_sparc.deb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-0-udeb_1.2.27-2+lenny3_sparc.udeb; http://security.debian.org/pool/updates/main/libp/libpng/libpng12-dev_1.2.27-2+lenny3_sparc.deb

MD5-kontrolsummer for de listede filer findes i den originale sikkerhedsbulletin.