Debians sikkerhedsbulletin
DSA-1852-1 fetchmail -- utilstrækkelig fornuftighedskontrol af inddata
- Rapporteret den:
- 7. aug 2009
- Berørte pakker:
- fetchmail
- Sårbar:
- Ja
- Referencer i sikkerhedsdatabaser:
- I Mitres CVE-ordbog: CVE-2009-2666.
- Yderligere oplysninger:
-
Man opdagede at fetchmail, et omfattende værktøj til fjernhentning og videresendelse af mail, var sårbar over for det "Null Prefix Attacks Against SSL/TLS Certificates" der nyligt blev offentliggjort på Blackhat-konferencen. Det gjorde det muligt for en angriber, at udføre uopdagede manden i midten-angreb gennem et fabrikeret ITU-T X.509-certifikat med en indsprøjtning af null-byte i felterne subjectAltName eller Common Name.
Bemærk, som fetchmail-bruger bør du altid anvende striks certifikatvalidering gennem en af disse kombinationer: sslcertck ssl sslproto ssl3 (for service på SSL-wrappede porte) eller sslcertck sslproto tls1 (for STARTTLS-baserede services)
I den gamle stabile distribution (etch), er dette problem rettet i version 6.3.6-1etch2.
I den stabile distribution (lenny), er dette problem rettet i version 6.3.9~rc2-4+lenny1.
I distributionen testing (squeeze), vil dette problem snart blive rettet.
I den ustabile distribution (sid), er dette problem rettet i version 6.3.9~rc2-6.
Vi anbefaler at du opgraderer dine fetchmail-pakker.
- Rettet i:
-
Debian GNU/Linux 4.0 (etch)
- Kildekode:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2.dsc
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6.orig.tar.gz
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2.diff.gz
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6.orig.tar.gz
- Arkitekturuafhængig komponent:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmailconf_6.3.6-1etch2_all.deb
- Alpha:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2_alpha.deb
- AMD64:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2_amd64.deb
- ARM:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2_arm.deb
- HP Precision:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2_hppa.deb
- Intel IA-32:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2_i386.deb
- Intel IA-64:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2_ia64.deb
- PowerPC:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2_powerpc.deb
- IBM S/390:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2_s390.deb
- Sun Sparc:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.6-1etch2_sparc.deb
Debian GNU/Linux 5.0 (lenny)
- Kildekode:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1.dsc
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1.diff.gz
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2.orig.tar.gz
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1.diff.gz
- Arkitekturuafhængig komponent:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmailconf_6.3.9~rc2-4+lenny1_all.deb
- Alpha:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_alpha.deb
- AMD64:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_amd64.deb
- ARM:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_arm.deb
- ARM EABI:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_armel.deb
- HP Precision:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_hppa.deb
- Intel IA-32:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_i386.deb
- Intel IA-64:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_ia64.deb
- Big-endian MIPS:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_mips.deb
- Little-endian MIPS:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_mipsel.deb
- PowerPC:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_powerpc.deb
- IBM S/390:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_s390.deb
- Sun Sparc:
- http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_6.3.9~rc2-4+lenny1_sparc.deb
MD5-kontrolsummer for de listede filer findes i den originale sikkerhedsbulletin.