PT-2017-2434 · Xen+1 · Xen+1

Jan Beulich · Published 2017-07-05 · Updated 2019-10-03 · CVE-2017-10921

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Xen versions prior to 4.9

Description The issue is related to the grant-table feature, which does not ensure sufficient type counts for a GNTMAP device map and GNTMAP host map mapping. This allows guest OS users to cause a denial of service, including count mismanagement and memory corruption, or obtain privileged host OS access. The vulnerability can be exploited by a remote attacker to cause a denial of service or gain privileged access to the host.

Recommendations For Xen versions prior to 4.9, update to a version that includes the fix for this issue to prevent exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

CWE-264

Related Identifiers

BDU:2017-01639

CVE-2017-10921

DLA-1132-1

DSA-3969-1

OPENSUSE-SU-2017_1826-1

SUSE-SU-2017:1795-1

SUSE-SU-2017:1812-1

Affected Products

Suse

Xen

References · 56

• https://nvd.nist.gov/vuln/detail/CVE-2017-10921 · Security Note
• https://osv.dev/vulnerability/CVE-2017-10921 · Vendor Advisory
• http://debian.org/security/2017/dsa-3969 · Vendor Advisory
• https://security.gentoo.org/glsa/201710-17 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-10921 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3969-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-10921 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:1795-1 · Vendor Advisory
• https://security.gentoo.org/glsa/201708-03 · Vendor Advisory
• https://bdu.fstec.ru/vul/2017-01639 · Security Note
• https://cve.org/CVERecord?id=CVE-2017-10921 · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2017-10921 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:1812-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-10921 · Vendor Advisory
• https://xenbits.xen.org/xsa/advisory-224.html · Vendor Advisory