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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:25706
[Rus]
Version
2
Class
patch
ALTXid
162211
Language
English
Severity
Critical
Title
DLA-965-1 -- qemu-kvm security update
Description
Several vulnerabilities were discovered in qemu-kvm, a full virtualization solution for Linux hosts on x86 hardware with x86 guests based on the Quick Emulator(Qemu).
Family
unix
Platform
Debian GNU/kFreeBSD 7
Debian GNU/Linux 7
Product
qemu-kvm
Reference
VENDOR: DLA-965-1
VENDOR: DLA-965-1
Id:
DLA-965-1
Reference:
https://lists.debian.org/debian-lts-announce/2017/debian-lts-announce-201705/msg00040.html
CVE: CVE-2016-9602
CVE: CVE-2016-9602
Id:
CVE-2016-9602
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9602
Comment
: Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.
CVSSv2 Score:
9
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
SINGLE
Confidentiality impact:
COMPLETE
Integrity impact:
COMPLETE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:N/AC:L/Au:S/C:C/I:C/A:C
CVSSv3 Score:
8.8
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE:
59 (Improper Link Resolution Before File Access ('Link Following'))
References:
[qemu-devel] 20170220 [PATCH 00/29] 9pfs: local: fix vulnerability to symlink attacks (MLIST)
[qemu-devel] 20170130 [PATCH RFC 00/36] 9pfs: local: fix vulnerability to symlink attacks (MLIST)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9602 (CONFIRM)
[oss-security] 20170117 CVE-2016-9602 Qemu: 9p: virtfs allows guest to access host filesystem (MLIST)
GLSA-201704-01 (GENTOO)
1037604 (SECTRACK)
95461 (BID)
[debian-lts-announce] 20180906 [SECURITY] [DLA 1497-1] qemu security update (MLIST)
CVE: CVE-2017-7377
CVE: CVE-2017-7377
Id:
CVE-2017-7377
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7377
Comment
: The (1) v9fs_create and (2) v9fs_lcreate functions in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allow local guest OS privileged users to cause a denial of service (file descriptor or memory consumption) via vectors related to an already in-use fid.
CVSSv2 Score:
2.1
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:N/I:N/A:P
CVSSv3 Score:
6
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
HIGH
User interaction:
NONE
Scope:
CHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
CWE:
772 (Missing Release of Resource after Effective Lifetime)
References:
[qemu-devel] 20170328 [PULL 1/2] 9pfs: fix file descriptor leak (MLIST)
https://bugzilla.redhat.com/show_bug.cgi?id=1437871 (CONFIRM)
[oss-security] 20170403 CVE-2017-7377 Qemu: 9pfs: host memory leakage via v9fs_create (MLIST)
97319 (BID)
GLSA-201706-03 (GENTOO)
[debian-lts-announce] 20180906 [SECURITY] [DLA 1497-1] qemu security update (MLIST)
http://git.qemu-project.org/?p=qemu.git%3Ba=commit%3Bh=d63fb193e71644a073b77ff5ac6f1216f2f6cf6e ()
CVE: CVE-2017-7471
CVE: CVE-2017-7471
Id:
CVE-2017-7471
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7471
Comment
: Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System (9pfs) support, is vulnerable to an improper access control issue. It could occur while accessing files on a shared host directory. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.
CVSSv2 Score:
7.7
Access vector:
ADJACENT_NETWORK
Access complexity:
LOW
Authentication:
SINGLE
Confidentiality impact:
COMPLETE
Integrity impact:
COMPLETE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:A/AC:L/Au:S/C:C/I:C/A:C
CVSSv3 Score:
9
Attack vector:
ADJACENT_NETWORK
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
CHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE:
732 (Incorrect Permission Assignment for Critical Resource)
References:
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7471 (CONFIRM)
[oss-security] 20170419 CVE-2017-7471 Qemu: 9p: virtfs allows guest to change filesystem attributes on host (MLIST)
GLSA-201706-03 (GENTOO)
97970 (BID)
https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=9c6b899f7a46893ab3b671e341a2234e9c0c060e (MISC)
CVE: CVE-2017-7493
CVE: CVE-2017-7493
Id:
CVE-2017-7493
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7493
Comment
: Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support, is vulnerable to an improper access control issue. It could occur while accessing virtfs metadata files in mapped-file security mode. A guest user could use this flaw to escalate their privileges inside guest.
CVSSv2 Score:
4.6
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSSv3 Score:
7.8
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE:
732 (Incorrect Permission Assignment for Critical Resource)
References:
[qemu-devel] 20170516 [PULL] 9pfs: local: forbid client access to metadata (CVE-2017-7493) (MLIST)
https://bugzilla.redhat.com/show_bug.cgi?id=1451709 (CONFIRM)
[oss-security] 20170517 CVE-2017-7493 Qemu: 9pfs: guest privilege escalation in virtfs mapped-file mode (MLIST)
98574 (BID)
GLSA-201706-03 (GENTOO)
[debian-lts-announce] 20180906 [SECURITY] [DLA 1497-1] qemu security update (MLIST)
CVE: CVE-2017-8086
CVE: CVE-2017-8086
Id:
CVE-2017-8086
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8086
Comment
: Memory leak in the v9fs_list_xattr function in hw/9pfs/9p-xattr.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (memory consumption) via vectors involving the orig_value variable.
CVSSv2 Score:
4.9
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:N/I:N/A:C
CVSSv3 Score:
6.5
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
CHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE:
772 (Missing Release of Resource after Effective Lifetime)
References:
[qemu-devel] 20170410 [PULL] 9pfs: xattr: fix memory leak in v9fs_list_xattr (MLIST)
https://bugzilla.redhat.com/show_bug.cgi?id=1444781 (CONFIRM)
98012 (BID)
[oss-security] 20170425 CVE-2017-8086 Qemu: 9pfs: host memory leakage via v9pfs_list_xattr (MLIST)
GLSA-201706-03 (GENTOO)
[debian-lts-announce] 20180906 [SECURITY] [DLA 1497-1] qemu security update (MLIST)
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=4ffcdef4277a91af15a3c09f7d16af072c29f3f2 ()
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