Bug 464817 (CVE-2008-4405)
Summary: | CVE-2008-4405 xen: Multiple unsafe uses of guest-writable data from xenstore | ||
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Product: | [Other] Security Response | Reporter: | Daniel Berrangé <berrange> |
Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
Status: | CLOSED CURRENTRELEASE | QA Contact: | |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | unspecified | CC: | bburns, bressers, clalance, jlieskov, mjc, security-response-team, veillard, xen-maint |
Target Milestone: | --- | Keywords: | Security |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2009-10-22 16:03:29 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | 465937, 465938, 467684, 467685 | ||
Bug Blocks: | 464818, 479042 |
Description
Daniel Berrangé
2008-09-30 17:17:32 UTC
This flaw is publically known, since a developer posted a patch to xen-devel without saying that it was security sensitive :-( Lead of thread: http://lists.xensource.com/archives/html/xen-devel/2008-09/msg00992.html Place where it was pointed out to be security problem http://lists.xensource.com/archives/html/xen-devel/2008-09/msg00994.html There is now a fix available from upstream repository that addresses this in 2 parts - Makes most of the xenstore entries under /local/domain/$DOMID read-only to the guest. only 'devices', 'error' and 'control' are now writable by the guest - Moves some of the stuff previously under the '/local/domain/$DOMID/devices' section to /vm/$UUID/devices instead http://xenbits.xensource.com/staging/xen-3.3-testing.hg?rev/e0e17216ba70 This will need to be backported to the Xen in RHEL-5 I'm moving this bug to the Security Response product for proper tracking as a security flaw. I'm giving this a severity of moderate. Once we have a CVE id, we can fix it in RHEL5 with an async update. Turns out the upstream patch is broken http://lists.xensource.com/archives/html/xen-devel/2008-12/msg00842.html https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2008-5716 has been reported due comment c#8. This was released a long time ago, so closing this tracking bug. Chris Lalancette |