National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2015-7835 Detail

Description

The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, which allows local PV guest administrators to gain privileges via a crafted superpage mapping.

Source:  MITRE      Last Modified:  10/30/2015

Quick Info

CVE Dictionary Entry:
CVE-2015-7835
Original release date:
10/30/2015
Last revised:
06/30/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
7.2 HIGH
Vector:
(AV:L/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore:
10.0
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html External Source FEDORA FEDORA-2015-a931b02be2
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html External Source FEDORA FEDORA-2015-6f6b79efe2
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html External Source FEDORA FEDORA-2015-242be2c240
http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html External Source SUSE openSUSE-SU-2015:1965
http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html External Source SUSE openSUSE-SU-2015:2250
http://support.citrix.com/article/CTX202404 External Source CONFIRM http://support.citrix.com/article/CTX202404
http://www.debian.org/security/2015/dsa-3390 External Source DEBIAN DSA-3390
http://www.securityfocus.com/bid/77366 External Source BID 77366
http://www.securitytracker.com/id/1034032 External Source SECTRACK 1034032
http://xenbits.xen.org/xsa/advisory-148.html Vendor Advisory External Source CONFIRM http://xenbits.xen.org/xsa/advisory-148.html
https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-022-2015.txt Vendor Advisory External Source MISC https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-022-2015.txt
https://security.gentoo.org/glsa/201604-03 External Source GENTOO GLSA-201604-03

Technical Details

Vulnerability Type (View All)

  • Input Validation (CWE-20)
  • Permissions, Privileges, and Access Control (CWE-264)

Change History 5 change records found - show changes