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DebianCVE-2015-8709

HistoryFeb 08, 2016 - 3:59 a.m.

CVE-2015-8709

2016-02-0803:59:05

CWE-264

debian

web.nvd.nist.gov

cve-2015-8709

linux kernel

uid

gid

privilege escalation

ptrace system call

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

Confidence

High

EPSS

Percentile

10.1%

JSON

kernel/ptrace.c in the Linux kernel through 4.4.1 mishandles uid and gid mappings, which allows local users to gain privileges by establishing a user namespace, waiting for a root process to enter that namespace with an unsafe uid or gid, and then using the ptrace system call. NOTE: the vendor states "there is no kernel bug here.

Affected configurations

Nvd

Node

linuxlinux_kernelRange≤4.4.1

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

References

lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00026.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00027.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00028.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00029.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00030.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00031.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00032.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00033.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00034.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00036.html

lists.opensuse.org/opensuse-security-announce/2016-04/msg00037.html

lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html

marc.info/?l=linux-kernel&m=145204362722256&w=2

marc.info/?l=linux-kernel&m=145204641422813&w=2

www.debian.org/security/2016/dsa-3434

www.openwall.com/lists/oss-security/2015/12/17/12

www.openwall.com/lists/oss-security/2015/12/31/5

www.securityfocus.com/bid/79899

www.securitytracker.com/id/1034899

bugzilla.redhat.com/show_bug.cgi?id=1295287

lkml.org/lkml/2015/12/25/71

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

Confidence

High

EPSS

Percentile

10.1%

JSON

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