National Vulnerability Database

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    Vulnerabilities Detail

CVE-2015-2925 Detail

Description

The prepend_path function in fs/dcache.c in the Linux kernel before 4.2.4 does not properly handle rename actions inside a bind mount, which allows local users to bypass an intended container protection mechanism by renaming a directory, related to a "double-chroot attack."

Source:  MITRE
Description Last Modified:  11/16/2015

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 6.9 MEDIUM
Vector: (AV:L/AC:M/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.4

Access Vector (AV): Local
Access Complexity (AC): Medium
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=397d425dc26da728396e66d392d5dcb8dac30c37
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cde93be45a8a90d8c264c776fab63487b5038a65 Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html
http://permalink.gmane.org/gmane.linux.kernel.containers/29173
http://permalink.gmane.org/gmane.linux.kernel.containers/29177
http://pkgs.fedoraproject.org/cgit/kernel.git/commit/?h=f22&id=520b64102de2f184036024b2a53de2b67463bd78
http://rhn.redhat.com/errata/RHSA-2015-2636.html
http://rhn.redhat.com/errata/RHSA-2016-0068.html
http://www.debian.org/security/2015/dsa-3364
http://www.debian.org/security/2015/dsa-3372
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.4 Vendor Advisory
http://www.openwall.com/lists/oss-security/2015/04/04/4
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/73926
http://www.ubuntu.com/usn/USN-2792-1
http://www.ubuntu.com/usn/USN-2794-1
http://www.ubuntu.com/usn/USN-2795-1
http://www.ubuntu.com/usn/USN-2798-1
http://www.ubuntu.com/usn/USN-2799-1
https://bugzilla.redhat.com/show_bug.cgi?id=1209367
https://bugzilla.redhat.com/show_bug.cgi?id=1209373
https://github.com/torvalds/linux/commit/397d425dc26da728396e66d392d5dcb8dac30c37 Vendor Advisory
https://github.com/torvalds/linux/commit/cde93be45a8a90d8c264c776fab63487b5038a65 Vendor Advisory

Technical Details

Vulnerability Type (View All)

Change History

9 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-2925
NVD Published Date:
11/16/2015
NVD Last Modified:
01/04/2018