Debian Security Advisory

DSA-2052-1 krb5 -- null pointer dereference

Date Reported:
24 May 2010
Affected Packages:
krb5
Vulnerable:
Yes
Security database references:
In the Debian bugtracking system: Bug 582261.
In Mitre's CVE dictionary: CVE-2010-1321.
More information:

Shawn Emery discovered that in MIT Kerberos 5 (krb5), a system for authenticating users and services on a network, a null pointer dereference flaw in the Generic Security Service Application Program Interface (GSS-API) library could allow an authenticated remote attacker to crash any server application using the GSS-API authentication mechanism, by sending a specially-crafted GSS-API token with a missing checksum field.

For the stable distribution (lenny), this problem has been fixed in version 1.6.dfsg.4~beta1-5lenny4.

For the testing distribution (squeeze), this problem has been fixed in version 1.8.1+dfsg-3.

For the unstable distribution (sid), this problem has been fixed in version 1.8.1+dfsg-3.

We recommend that you upgrade your krb5 packages.

Fixed in:

Debian GNU/Linux 5.0 (lenny)

Source:
http://security.debian.org/pool/updates/main/k/krb5/krb5_1.6.dfsg.4~beta1-5lenny4.diff.gz
http://security.debian.org/pool/updates/main/k/krb5/krb5_1.6.dfsg.4~beta1-5lenny4.dsc
http://security.debian.org/pool/updates/main/k/krb5/krb5_1.6.dfsg.4~beta1.orig.tar.gz
Architecture-independent component:
http://security.debian.org/pool/updates/main/k/krb5/krb5-doc_1.6.dfsg.4~beta1-5lenny4_all.deb
Alpha:
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_alpha.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_alpha.deb
AMD64:
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_amd64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_amd64.deb
ARM:
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_arm.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_arm.deb
ARM EABI:
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_armel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_armel.deb
HP Precision:
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_hppa.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_hppa.deb
Intel IA-32:
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_i386.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_i386.deb
Intel IA-64:
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_ia64.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_ia64.deb
Big-endian MIPS:
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_mips.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_mips.deb
Little-endian MIPS:
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_mipsel.deb
PowerPC:
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_powerpc.deb
IBM S/390:
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_s390.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_s390.deb
Sun Sparc:
http://security.debian.org/pool/updates/main/k/krb5/krb5-rsh-server_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-user_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-telnetd_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-ftpd_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dev_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-admin-server_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb53_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc-ldap_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-pkinit_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/libkrb5-dbg_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/libkadm55_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-kdc_1.6.dfsg.4~beta1-5lenny4_sparc.deb
http://security.debian.org/pool/updates/main/k/krb5/krb5-clients_1.6.dfsg.4~beta1-5lenny4_sparc.deb

MD5 checksums of the listed files are available in the original advisory.