===================================================================== CERT-Renater Note d'Information No. 2006/VULN259 _____________________________________________________________________ DATE : 19/05/2006 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : linux running kernel versions 2.6.x. ====================================================================== _______________________________________________________________________ Mandriva Linux Security Advisory MDKSA-2006:086 http://www.mandriva.com/security/ _______________________________________________________________________ Package : kernel Date : May 18, 2006 Affected: 2006.0 _______________________________________________________________________ Problem Description: A number of vulnerabilities were discovered and corrected in the Linux 2.6 kernel: Prior to Linux kernel 2.6.16.5, the kernel does not properly handle uncanonical return addresses on Intel EM64T CPUs which causes the kernel exception handler to run on the user stack with the wrong GS (CVE-2006-0744). The selinux_ptrace logic hooks in SELinux for 2.6.6 allow local users with ptrace permissions to change the tracer SID to an SID of another process (CVE-2006-1052). Prior to 2.6.16, the ip_push_pending_frames function increments the IP ID field when sending a RST after receiving unsolicited TCP SYN-ACK packets, which allows a remote attacker to conduct an idle scan attack, bypassing any intended protection against such an attack (CVE-2006-1242). In kernel 2.6.16.1 and some earlier versions, the sys_add_key function in the keyring code allows local users to cause a DoS (OOPS) via keyctl requests that add a key to a user key instead of a keyring key, causing an invalid dereference (CVE-2006-1522). Prior to 2.6.16.8, the ip_route_input function allows local users to cause a DoS (panic) via a request for a route for a multicast IP address, which triggers a null dereference (CVE-2006-1525). Prior to 2.6.16.13, the SCTP-netfilter code allows remote attackers to cause a DoS (infinite loop) via unknown vectors that cause an invalid SCTP chunk size to be processed (CVE-2006-1527). Prior to 2.6.16, local users can bypass IPC permissions and modify a read-only attachment of shared memory by using mprotect to give write permission to the attachment (CVE-2006-2071). Prior to 2.6.17, the ECNE chunk handling in SCTP (lksctp) allows remote attackers to cause a DoS (kernel panic) via an unexpected chucnk when the session is in CLOSED state (CVE-2006-2271). Prior to 2.6.17, SCTP (lksctp) allows remote attacker to cause a DoS (kernel panic) via incoming IP fragmented COOKIE_ECHO and HEARTBEAT SCTP control chunks (CVE-2006-2272). In addition to these security fixes, other fixes have been included such as: - fix a scheduler deadlock - Yenta oops fix - ftdi_sio: adds support for iPlus devices - enable kprobes on i386 and x86_64 - avoid a panic on bind mount of autofs owned directory - fix a kernel OOPs when booting with 'console=ttyUSB0' but without a USB-serial dongle plugged in - make dm-mirror not issue invalid resync requests - fix media change detection on scsi removable devices - add support for the realtek 8168 chipset - update hfsplus driver to 2.6.16 state - backport 'Gilgal' support from e1000 7.0.33 - selected ACPI video fixes - update 3w-9xxx to 2.26.02.005 (9550SX support) - fix a deadlock in the ext2 filesystem - fix usbserial use-after-free bug - add i945GM DRI support - S3 resume fixes - add ECS PF22 hda model support - SMP suspend - CPU hotplug - miscellaneous AGP fixes - added sata-suspend patch for 2.6.12 for Napa platform The provided packages are patched to fix these vulnerabilities. All users are encouraged to upgrade to these updated kernels. As well, updated mkinitrd and bootsplash packages are provided to fix minor issues; users should upgrade both packages prior to installing a new kernel. To update your kernel, please follow the directions located at: http://www.mandriva.com/en/security/kernelupdate _______________________________________________________________________ References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0744 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1052 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1242 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1522 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1525 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1527 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2071 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2271 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2272 _______________________________________________________________________ Updated Packages: Mandriva Linux 2006.0: 7750a216a241ed6af6d22e25cd06a5c2 2006.0/RPMS/bootsplash-3.1.12-0.2.20060mdk.i586.rpm ba0b9bcb350d995590f680add39cbc5b 2006.0/RPMS/kernel-2.6.12.21mdk-1-1mdk.i586.rpm 591ab924840be035eba8a94f8d43eb9a 2006.0/RPMS/kernel-BOOT-2.6.12.21mdk-1-1mdk.i586.rpm 200c65b3c9a0daf1409f377a6361cd36 2006.0/RPMS/kernel-i586-up-1GB-2.6.12.21mdk-1-1mdk.i586.rpm c131b93ce94dd3f99b5911c9af3a4156 2006.0/RPMS/kernel-i686-up-4GB-2.6.12.21mdk-1-1mdk.i586.rpm 3cfdf97e572b8087b3fc695770502fa6 2006.0/RPMS/kernel-smp-2.6.12.21mdk-1-1mdk.i586.rpm 9323571a05fc5d281939c83daf84e375 2006.0/RPMS/kernel-source-2.6-2.6.12-21mdk.i586.rpm 16fbb0c19f1f2b45e40e6547db813db8 2006.0/RPMS/kernel-source-stripped-2.6-2.6.12-21mdk.i586.rpm a84be259414f8bac67f484b4b02f6a46 2006.0/RPMS/kernel-xbox-2.6.12.21mdk-1-1mdk.i586.rpm e158c0935ca9f812b06372e2071dba17 2006.0/RPMS/kernel-xen0-2.6.12.21mdk-1-1mdk.i586.rpm f0d9631ac5fa2a4e991012e2e51ced5f 2006.0/RPMS/kernel-xenU-2.6.12.21mdk-1-1mdk.i586.rpm 728741e920bc860bb6772ed145d3f5c5 2006.0/RPMS/mkinitrd-4.2.17-17.2.20060mdk.i586.rpm a81220042492360e66b2a546810486d9 2006.0/SRPMS/bootsplash-3.1.12-0.2.20060mdk.src.rpm 5e2460c3d8da16724a5e70a28f3a6192 2006.0/SRPMS/kernel-2.6.12.21mdk-1-1mdk.src.rpm afc7e77996523c7655fbdcb057da3cff 2006.0/SRPMS/mkinitrd-4.2.17-17.2.20060mdk.src.rpm Mandriva Linux 2006.0/X86_64: a0687b63a2027b3f1c378114ee8776b7 x86_64/2006.0/RPMS/bootsplash-3.1.12-0.2.20060mdk.x86_64.rpm 533b60ecaa224ebcf1775da64681c625 x86_64/2006.0/RPMS/kernel-2.6.12.21mdk-1-1mdk.x86_64.rpm ed40189238ba65b1619010c97e71ae09 x86_64/2006.0/RPMS/kernel-BOOT-2.6.12.21mdk-1-1mdk.x86_64.rpm a40edd3cfeb70a705951e05515881a59 x86_64/2006.0/RPMS/kernel-smp-2.6.12.21mdk-1-1mdk.x86_64.rpm 2823e60fa1510c2ac269a69921466042 x86_64/2006.0/RPMS/kernel-source-2.6-2.6.12-21mdk.x86_64.rpm 9cd35f648ca8d30b49b38841cc6766db x86_64/2006.0/RPMS/kernel-source-stripped-2.6-2.6.12-21mdk.x86_64.rpm e87787cd3f30034b40cf0e8eb4301437 x86_64/2006.0/RPMS/mkinitrd-4.2.17-17.2.20060mdk.x86_64.rpm a81220042492360e66b2a546810486d9 x86_64/2006.0/SRPMS/bootsplash-3.1.12-0.2.20060mdk.src.rpm 5e2460c3d8da16724a5e70a28f3a6192 x86_64/2006.0/SRPMS/kernel-2.6.12.21mdk-1-1mdk.src.rpm afc7e77996523c7655fbdcb057da3cff x86_64/2006.0/SRPMS/mkinitrd-4.2.17-17.2.20060mdk.src.rpm _______________________________________________________________________ To upgrade automatically use MandrivaUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. All packages are signed by Mandriva for security. You can obtain the GPG public key of the Mandriva Security Team by executing: gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98 You can view other update advisories for Mandriva Linux at: http://www.mandriva.com/security/advisories If you want to report vulnerabilities, please contact security_(at)_mandriva.com _______________________________________________________________________ Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Mandriva Security Team ====================================================================== ========================================================= Les serveurs de référence du CERT-Renater http://www.urec.fr/securite http://www.cru.fr/securite http://www.renater.fr ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 151 bd de l'Hopital | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================