The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU consumption) via a large production request index to the blkback or blktap back-end drivers. NOTE: some of these details are obtained from third party information.
http://secunia.com/advisories/35093
http://secunia.com/advisories/42789
http://secunia.com/advisories/46397
http://www.openwall.com/lists/oss-security/2010/11/23/1
http://www.openwall.com/lists/oss-security/2010/11/24/8
http://www.redhat.com/support/errata/RHSA-2011-0004.html
http://www.securityfocus.com/archive/1/520102/100/0/threaded
http://www.securityfocus.com/bid/45029
http://www.vmware.com/security/advisories/VMSA-2011-0012.html
http://www.vupen.com/english/advisories/2011/0024
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d
AND
OR
cpe:2.3:a:citrix:xen:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xen:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xen:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xen:3.1.3:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xen:3.1.4:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xen:3.2.0:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xen:3.2.1:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xen:3.2.2:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xen:3.2.3:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xen:3.3.0:*:*:*:*:*:*:*
OR
ID | Name | Product | Family | Severity |
---|---|---|---|---|
89680 | VMware ESX / ESXi Third-Party Libraries Multiple Vulnerabilities (VMSA-2011-0012) (remote check) | Nessus | Misc. | high |
68176 | Oracle Linux 5 : kernel (ELSA-2011-0004) | Nessus | Oracle Linux Local Security Checks | high |
60929 | Scientific Linux Security Update : kernel on SL5.x i386/x86_64 | Nessus | Scientific Linux Local Security Checks | high |
56508 | VMSA-2011-0012 : VMware ESXi and ESX updates to third-party libraries and ESX Service Console | Nessus | VMware ESX Local Security Checks | high |
55607 | Ubuntu 8.04 LTS : linux vulnerabilities (USN-1170-1) | Nessus | Ubuntu Local Security Checks | high |
51426 | CentOS 5 : kernel (CESA-2011:0004) | Nessus | CentOS Local Security Checks | high |
51417 | RHEL 5 : kernel (RHSA-2011:0004) | Nessus | Red Hat Local Security Checks | high |