PT-2017-12729 · Xen+1 · Xen+1

Jan Beulich · Published 2017-08-15 · Updated 2017-11-16 · CVE-2017-12855

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Xen versions 4.5 through 4.9

Description The issue arises when Xen incorrectly clears the status bits too early, informing the guest that a grant is no longer in use. This can lead to a guest prematurely reusing a granted frame that still contains sensitive information, as the domain on the far end of the grant is still using it.

Recommendations For Xen versions 4.5 through 4.9, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2017-12855

DLA-1132-1

DSA-3969-1

OPENSUSE-SU-2017_2394-1

OPENSUSE-SU-2017_2398-1

SUSE-SU-2017:2326-1

SUSE-SU-2017:2327-1

SUSE-SU-2017:2327-2

SUSE-SU-2017:2339-1

SUSE-SU-2017:2450-1

SUSE-SU-2017:2541-1

Affected Products

Suse

Xen

References · 59

• https://cve.org/CVERecord?id=CVE-2017-12855 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2017:2541-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-12855 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:2339-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-12855 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:2327-1 · Vendor Advisory
• http://xenbits.xen.org/xsa/advisory-230.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:2450-1 · Vendor Advisory
• http://debian.org/security/2017/dsa-3969 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-12855 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3969-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:2326-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-12855 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2017-12855 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:2327-2 · Vendor Advisory