Linux Kernel routing implementation cache denial of service
|linux-kernel-routing-dos (55808)||Medium Risk|
The Linux Kernel is vulnerable to a denial of service, caused by errors in the routing implementation. By sending multiple specially-crafted packets, a remote attacker could trigger the emergency route flush process, causing a deadlock or alternately, cause a route look-up to trigger an uninitialized pointer, which would cause the kernel to panic.
Denial of Service
Refer to RHSA-2010:0046-1 for patch, upgrade or suggested workaround information. See References.
For other distributions:
Apply the appropriate update for your system. See References.
- Red Hat Bugzilla Bug 545411: CVE-2009-4272 kernel: emergency route cache flushing leads to node deadlock.
- VMSA-2010-0009: ESXi utilities and ESX Service Console third party updates.
- BID-37875: Red Hat Linux Kernel Routing Implementation Multiple Remote Denial of Service Vulnerabilities
- CVE-2009-4272: A certain Red Hat patch for net/ipv4/route.c in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 allows remote attackers to cause a denial of service (deadlock) via crafted packets that force collisions in the IPv4 routing hash table, and trigger a routing emergency in which a hash chain is too long. NOTE: this is related to an issue in the Linux kernel before 2.6.31, when the kernel routing cache is disabled, involving an uninitialized pointer and a panic.
- RHSA-2010-0046: Important: kernel security and bug fix update
- RHSA-2010-0095: Important: rhev-hypervisor security and bug fix update
- SA39920: VMware vMA kernel Multiple Vulnerabilities
- SA39972: VMware ESXi ntp Mode 7 Request Denial of Service
- SA39973: VMware ESX Multiple krb5 Vulnerabilities
- SA39974: VMware ESX GCC libtool Search Path Privilege Escalation Security Issue
- SA39975: VMware ESX gzip unlzw() Integer Underflow Vulnerability
- SA39976: VMware vMA OpenSSL CRYPTO_free_all_ex_data() Memory Leak Vulnerability
- SA39977: VMware vMA Multiple krb5 Vulnerabilities
- SA39979: VMware vMA GCC libtool Search Path Privilege Escalation Security Issue
- SA39980: VMware vMA gzip unlzw() Integer Underflow Vulnerability
- SA39981: VMware vMA sudo Privilege Escalation Security Issues
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 5 Server
- RedHat Enterprise Linux 5 Client
- RedHat Enterprise Linux 5.4.z EUS
- VMware ESX Server 4.0
- VMware ESXi Server 4.0
Jan 21, 2010
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.