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ubuntucveUbuntu.comUB:CVE-2017-1000111
HistoryAug 10, 2017 - 12:00 a.m.

CVE-2017-1000111

2017-08-1000:00:00
ubuntu.com
ubuntu.com
31

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

26.7%

Linux kernel: heap out-of-bounds in AF_PACKET sockets. This new issue is
analogous to previously disclosed CVE-2016-8655. In both cases, a socket
option that changes socket state may race with safety checks in
packet_set_ring. Previously with PACKET_VERSION. This time with
PACKET_RESERVE. The solution is similar: lock the socket for the update.
This issue may be exploitable, we did not investigate further. As this
issue affects PF_PACKET sockets, it requires CAP_NET_RAW in the process
namespace. But note that with user namespaces enabled, any process can
create a namespace in which it has CAP_NET_RAW.

Notes

Author Note
sbeattie fix subject “net-packet: fix race in packet_set_ring on PACKET_RESERVE”
smb While working on the embargoed CVE we decided that Precise cannot be exploited due to the missing user namespace support.
OSVersionArchitecturePackageVersionFilename
ubuntu14.04noarchlinux< 3.13.0-128.177UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-91.114UNKNOWN
ubuntu17.04noarchlinux< 4.10.0-32.36UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1030.39UNKNOWN
ubuntu16.04noarchlinux-gke< 4.4.0-1026.26UNKNOWN
ubuntu16.04noarchlinux-hwe< 4.10.0-32.36~16.04.1UNKNOWN
ubuntu18.04noarchlinux-hwe-edge< 4.18.0-8.9~18.04.1UNKNOWN
ubuntu16.04noarchlinux-hwe-edge< 4.10.0-32.36~16.04.1UNKNOWN
ubuntu14.04noarchlinux-lts-xenial< 4.4.0-91.114~14.04.1UNKNOWN
ubuntu16.04noarchlinux-raspi2< 4.4.0-1069.77UNKNOWN
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7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

26.7%