=========================================================== Ubuntu Security Notice USN-649-1 October 01, 2008 openssh vulnerabilities CVE-2008-1657, CVE-2008-4109 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 7.04 Ubuntu 7.10 This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: openssh-server 1:4.2p1-7ubuntu3.5 Ubuntu 7.04: openssh-server 1:4.3p2-8ubuntu1.5 Ubuntu 7.10: openssh-server 1:4.6p1-5ubuntu0.6 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: It was discovered that the ForceCommand directive could be bypassed. If a local user created a malicious ~/.ssh/rc file, they could execute arbitrary commands as their user id. This only affected Ubuntu 7.10. (CVE-2008-1657) USN-355-1 fixed vulnerabilities in OpenSSH. It was discovered that the fixes for this issue were incomplete. A remote attacker could attempt multiple logins, filling all available connection slots, leading to a denial of service. This only affected Ubuntu 6.06 and 7.04. (CVE-2008-4109) Updated packages for Ubuntu 6.06 LTS: Source archives: http://security.ubuntu.com/ubuntu/pool/main/o/openssh/openssh_4.2p1-7ubuntu3.5.diff.gz Size/MD5: 182759 84d6f01556b7f178854b1d89290f75a0 http://security.ubuntu.com/ubuntu/pool/main/o/openssh/openssh_4.2p1-7ubuntu3.5.dsc Size/MD5: 1049 4493dda5817b846d33120f85c6d3f77b http://security.ubuntu.com/ubuntu/pool/main/o/openssh/openssh_4.2p1.orig.tar.gz Size/MD5: 928420 93295701e6bcd76fabd6a271654ed15c Architecture independent packages: http://security.ubuntu.com/ubuntu/pool/main/o/openssh/ssh_4.2p1-7ubuntu3.5_all.deb Size/MD5: 1058 1c1b30301624bd73f969ff494e1836a0 amd64 architecture (Athlon64, Opteron, EM64T Xeon): http://security.ubuntu.com/ubuntu/pool/main/o/openssh/openssh-client-udeb_4.2p1-7ubuntu3.5_amd64.udeb Size/MD5: 166424 3916923233fa947bdf27caa2b0ad865f http://security.ubuntu.com/ubuntu/pool/main/o/openssh/openssh-client_4.2p1-7ubuntu3.5_amd64.deb Size/MD5: 655784 64c58ef16131c62ee1e2b0ebb6132baf http://security.ubuntu.com/ubuntu/pool/main/o/openssh/openssh-server_4.2p1-7ubuntu3.5_amd64.deb Size/MD5: 237226 30efa65f590c97098227165f8ce0d918 http://security.ubuntu.com/ubuntu/pool/main/o/openssh/ssh-askpass-gnome_4.2p1-7ubuntu3.5_amd64.deb Size/MD5: 87378 20d6b56fe548f0a9104b092df38570f6 http://security.ubuntu.com/ubuntu/pool/universe/o/openssh/openssh-server-udeb_4.2p1-7ubuntu3.5_amd64.udeb Size/MD5: 183792 04ddb7fb9361354ba35b0a7a4989ba9b i386 architecture (x86 compatible Intel/AMD): http://security.ubuntu.com/ubuntu/pool/main/o/openssh/openssh-client-udeb_4.2p1-7ubuntu3.5_i386.udeb Size/MD5: 141086 9411d7c548f6b5d7c8b42229135905c7 http://security.ubuntu.com/ubuntu/pool/main/o/openssh/openssh-client_4.2p1-7ubuntu3.5_i386.deb Size/MD5: 576638 ab0c266e0ced4ae835960da96ad1827e http://security.ubuntu.com/ubuntu/pool/main/o/openssh/openssh-server_4.2p1-7ubuntu3.5_i386.deb Size/MD5: 207402 8ba8438b3ac1a8b8a59fb1ea45ff43db 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