Vulnerability CVE-2016-5195

Vulnerability CVE-2016-5195

Published: 2016-11-10 Modified: 2016-11-11

Description:

Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."

Type:

CWE-362

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score	Impact Subscore	Exploitability Subscore
7.2/10	10/10	3.9/10

Exploit range	Attack complexity	Authentication
Local	Low	No required
Confidentiality impact	Integrity impact	Availability impact
Complete	Complete	Complete

Affected software
Redhat -> Enterprise linux
Redhat -> Enterprise linux aus
Redhat -> Enterprise linux eus
Redhat -> Enterprise linux long life
Redhat -> Enterprise linux tus
Linux -> Linux kernel
Debian -> Debian linux
Canonical -> Ubuntu core
Canonical -> Ubuntu linux

References:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=19be0eaffa3ac7d8eb6784ad9bdbc7d67ed8e619

http://rhn.redhat.com/errata/RHSA-2016-2098.html

http://rhn.redhat.com/errata/RHSA-2016-2105.html

http://rhn.redhat.com/errata/RHSA-2016-2106.html

http://rhn.redhat.com/errata/RHSA-2016-2107.html

http://rhn.redhat.com/errata/RHSA-2016-2110.html

http://rhn.redhat.com/errata/RHSA-2016-2118.html

http://rhn.redhat.com/errata/RHSA-2016-2120.html

http://rhn.redhat.com/errata/RHSA-2016-2124.html

http://rhn.redhat.com/errata/RHSA-2016-2126.html

http://rhn.redhat.com/errata/RHSA-2016-2127.html

http://rhn.redhat.com/errata/RHSA-2016-2128.html

http://rhn.redhat.com/errata/RHSA-2016-2132.html

http://rhn.redhat.com/errata/RHSA-2016-2133.html

http://securityadvisories.paloaltonetworks.com/Home/Detail/73

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.3

http://www.openwall.com/lists/oss-security/2016/10/26/7

http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html

http://www.securityfocus.com/bid/93793

http://www.securitytracker.com/id/1037078

https://access.redhat.com/errata/RHSA-2017:0372

https://access.redhat.com/security/cve/cve-2016-5195

https://access.redhat.com/security/vulnerabilities/2706661

https://bto.bluecoat.com/security-advisory/sa134

https://bugzilla.redhat.com/show_bug.cgi?id=1384344

https://bugzilla.suse.com/show_bug.cgi?id=1004418

https://dirtycow.ninja

https://github.com/dirtycow/dirtycow.github.io/wiki/PoCs

https://github.com/dirtycow/dirtycow.github.io/wiki/VulnerabilityDetails

https://github.com/torvalds/linux/commit/19be0eaffa3ac7d8eb6784ad9bdbc7d67ed8e619

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03707en_us

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03722en_us

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03742en_us

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03761en_us

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05341463

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05347541

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05352241

https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes

https://kc.mcafee.com/corporate/index?page=content&id=SB10176

https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-5195.html

https://security-tracker.debian.org/tracker/CVE-2016-5195

https://security.netapp.com/advisory/ntap-20161025-0001/

https://source.android.com/security/bulletin/2016-11-01.html

https://source.android.com/security/bulletin/2016-12-01.html

https://www.exploit-db.com/exploits/40611/

https://www.exploit-db.com/exploits/40616/

https://www.exploit-db.com/exploits/40839/

https://www.exploit-db.com/exploits/40847/

https://www.kb.cert.org/vuls/id/243144

Vulnerability CVE-2016-5195

Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."

CWE-362

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

7.2/10

10/10

3.9/10

Local

Low

No required

Complete

Complete

Complete

Affected software

References: