Summary: | <app-emulation/xen-{4.2.5-r9,4.4.2-r2}: VENOM: Privilege escalation via emulated floppy disk drive (XSA-133) (CVE-2015-3456) | ||
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Product: | Gentoo Security | Reporter: | Kristian Fiskerstrand (RETIRED) <k_f> |
Component: | Vulnerabilities | Assignee: | Gentoo Security <security> |
Status: | RESOLVED FIXED | ||
Severity: | major | CC: | ago, dlan, idella4, keytoaster |
Priority: | Normal | ||
Version: | unspecified | ||
Hardware: | All | ||
OS: | Linux | ||
See Also: | https://bugs.gentoo.org/show_bug.cgi?id=549404 | ||
Whiteboard: | B1 [glsa cve] | ||
Package list: | Runtime testing required: | --- |
Description
Kristian Fiskerstrand (RETIRED)
2015-05-11 19:04:10 UTC
DEPLOYMENT DURING EMBARGO ========================= Deployment of the patches described above (or others which are substantially similar) is permitted during the embargo, even on public-facing systems with untrusted guest users and administrators. But: Deployment of the mitigation by enabling stubdomains is NOT permitted (except on systems used and administered only by organisations which are members of the Xen Project Security Issues Predisclosure List). Specifically, deployment on public cloud systems is NOT permitted. This is because this configuration change may be visible to the guest. Also, distribution of updated software is prohibited (except to other members of the predisclosure list). Predisclosure list members who wish to deploy significantly different patches and/or mitigations, please contact the Xen Project Security Team. (Note: this during-embargo deployment notice is retained in post-embargo publicly released Xen Project advisories, even though it is then no longer applicable. This is to enable the community to have oversight of the Xen Project Security Team's decisionmaking.) For more information about permissible uses of embargoed information, consult the Xen Project community's agreed Security Policy: http://www.xenproject.org/security-policy.html *** Bug 549272 has been marked as a duplicate of this bug. *** *** Bug 549384 has been marked as a duplicate of this bug. *** Also affects QEMU, should this go into a separate bug report? Here's the patch: http://git.qemu.org/?p=qemu.git;a=commitdiff;h=e907746266721f305d67bc0718795fedee2e824c (In reply to Hanno Boeck from comment #4) > Also affects QEMU, should this go into a separate bug report? Thanks. Yes, please file a new bug for this in tree, fixed in following versions. app-emulation/xen-tools-4.2.5-r5 app-emulation/xen-tools-4.4.2-r2 app-emulation/xen-tools-4.5.0-r4 Arches, please test and mark stable: =app-emulation/xen-4.2.5-r9 =app-emulation/xen-tools-4.2.5-r5 Target keywords Both : "amd64 x86" =app-emulation/xen-4.4.2-r2 =app-emulation/xen-tools-4.4.2-r2 Target keywords Only: "amd64" (this also handle bug 547202) amd64 stable x86 stable. Maintainer(s), please cleanup. Security, please add it to the existing request, or file a new one. New request filed together with bug 547202 old vulnerable versions have been dropped, thanks CVE-2015-3456 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3456): The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other unspecified commands, aka VENOM. This issue was resolved and addressed in GLSA 201604-03 at https://security.gentoo.org/glsa/201604-03 by GLSA coordinator Yury German (BlueKnight). |