CVE-2010-4247: Input Validation
First published: Tue Nov 23 2010(Updated: )
If the frontend pass a bad index of production request, the backend will enter an endless loop and then cause a excessive CPU consumption. This issue has been fixed in upstream by: changeset: 391:77f831cbb91d user: Keir Fraser <keir.fraser> date: Fri Jan 18 16:52:25 2008 +0000 summary: blkback: Request-processing loop is unbounded and hence requires a <a href="http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d">http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d</a> changeset: 392:7070d34f251c user: Keir Fraser <keir.fraser> date: Mon Jan 21 11:43:31 2008 +0000 summary: blkback/blktap: Check for kthread_should_stop() in inner loop, <a href="http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c">http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c</a> Version-Release number of selected component (if applicable): 2.6.18-194.el5xen How reproducible: Steps to Reproduce: 1. build a guest kernel with the patch attached. 2. run domU with the patched kernel Actual results: Dom0 got hung. Expected results: Dom0 shouldn't be impacted by a bad guest.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux-2.6 | ||
| All of | ||
| Any of | ||
| XenServer | <=3.3.2 | |
| XenServer | =3.0.2 | |
| XenServer | =3.0.3 | |
| XenServer | =3.0.4 | |
| XenServer | =3.1.3 | |
| XenServer | =3.1.4 | |
| XenServer | =3.2.0 | |
| XenServer | =3.2.1 | |
| XenServer | =3.2.2 | |
| XenServer | =3.2.3 | |
| XenServer | =3.3.0 | |
| XenServer | =3.3.1 | |
| Linux Kernel | =2.6.18 | |
| XenServer | <=3.3.2 | |
| XenServer | =3.0.2 | |
| XenServer | =3.0.3 | |
| XenServer | =3.0.4 | |
| XenServer | =3.1.3 | |
| XenServer | =3.1.4 | |
| XenServer | =3.2.0 | |
| XenServer | =3.2.1 | |
| XenServer | =3.2.2 | |
| XenServer | =3.2.3 | |
| XenServer | =3.3.0 | |
| XenServer | =3.3.1 | |
| Linux Kernel | =2.6.18 |
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Reference Links
- http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c
- http://www.securityfocus.com/bid/45029
- http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d
- http://www.openwall.com/lists/oss-security/2010/11/23/1
- https://bugzilla.redhat.com/show_bug.cgi?id=656206
- http://secunia.com/advisories/35093
- http://www.openwall.com/lists/oss-security/2010/11/24/8
- http://www.redhat.com/support/errata/RHSA-2011-0004.html
- http://www.vupen.com/english/advisories/2011/0024
- http://secunia.com/advisories/42789
- http://secunia.com/advisories/46397
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- https://launchpad.net/bugs/cve/CVE-2010-4247
- https://rhn.redhat.com/errata/RHSA-2011-0004.html
- https://security-tracker.debian.org/tracker/CVE-2010-4247
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4247
- https://nvd.nist.gov/vuln/detail/CVE-2010-4247
- https://ubuntu.com/security/CVE-2010-4247
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