National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2015-8660 Detail

Description

The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3 attempts to merge distinct setattr operations, which allows local users to bypass intended access restrictions and modify the attributes of arbitrary overlay files via a crafted application.

Source:  MITRE
Description Last Modified:  12/28/2015

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.7 MEDIUM
Vector: AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 0.8

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Insufficient_Info
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=acff81ec2c79492b180fade3c2894425cd35a545
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html
http://packetstormsecurity.com/files/135151/Ubuntu-14.04-LTS-15.10-overlayfs-Local-Root.html
http://rhn.redhat.com/errata/RHSA-2016-1532.html
http://rhn.redhat.com/errata/RHSA-2016-1539.html
http://rhn.redhat.com/errata/RHSA-2016-1541.html
http://www.openwall.com/lists/oss-security/2015/12/23/5
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.securityfocus.com/bid/79671
http://www.securitytracker.com/id/1034548
http://www.ubuntu.com/usn/USN-2857-1
http://www.ubuntu.com/usn/USN-2857-2
http://www.ubuntu.com/usn/USN-2858-1
http://www.ubuntu.com/usn/USN-2858-2
http://www.ubuntu.com/usn/USN-2858-3
https://bugzilla.redhat.com/show_bug.cgi?id=1291329
https://github.com/torvalds/linux/commit/acff81ec2c79492b180fade3c2894425cd35a545
https://www.exploit-db.com/exploits/39166/
https://www.exploit-db.com/exploits/39230/
https://www.exploit-db.com/exploits/40688/

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Control (CWE-264)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
4.3.2


Change History

10 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-8660
NVD Published Date:
12/28/2015
NVD Last Modified:
09/09/2017