PT-2016-4864 · Xen+1 · Xen+1

Qinghao Tang · Published 2016-01-22 · Updated 2024-06-15 · CVE-2016-1570

Positive Technologies (AI Summary)

CVSS v3.1

8.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Xen versions 3.4.0 through 3.4.1 Xen versions 4.1.x through 4.6.x

Description The issue allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact. This is achieved via a crafted page identifier (MFN) to specific sub-ops in the HYPERVISOR mmuext op hypercall, including (1) MMUEXT MARK SUPER or (2) MMUEXT UNMARK SUPER, or through unknown vectors related to page table updates.

Recommendations For Xen versions 3.4.0 and 3.4.1, update to a version that includes the fix for this issue. For Xen versions 4.1.x through 4.6.x, update to a version that includes the fix for this issue. As a temporary workaround, consider restricting access to the HYPERVISOR mmuext op hypercall to minimize the risk of exploitation.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2016-1570

DLA-479-1

DSA-3519-1

MGASA-2016-0098

OPENSUSE-SU-2016_0914-1

OPENSUSE-SU-2016_0995-1

OPENSUSE-SU-2024:10196-1

SUSE-SU-2016:0873-1

SUSE-SU-2016:0955-1

SUSE-SU-2016:1154-1

SUSE-SU-2016:1318-1

SUSE-SU-2016:1745-1

Affected Products

Suse

Xen

References · 291

• https://osv.dev/vulnerability/SUSE-SU-2016:0955-1 · Vendor Advisory
• http://xenbits.xen.org/xsa/advisory-167.html · Vendor Advisory
• https://advisories.mageia.org/MGASA-2016-0098.html · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2016:1154-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2016:0873-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2016-1570 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-1570 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-1570 · Security Note
• https://osv.dev/vulnerability/DSA-3519-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2016:1318-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-1570 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2016:1745-1 · Vendor Advisory
• http://debian.org/security/2016/dsa-3519 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10196-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-1570 · Vendor Advisory