Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2020-27670 |
CWE-ID | CWE-345 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
Xen Server applications / Virtualization software |
Vendor | Xen Project |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU49940
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-27670
CWE-ID:
CWE-345 - Insufficient Verification of Data Authenticity
Exploit availability: No
DescriptionThe vulnerability allows a local authenticated user to execute arbitrary code.
An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because an AMD IOMMU page-table entry can be half-updated.
MitigationInstall update from vendor's website.
Vulnerable software versionsXen: 4.0.0 - 4.14.1
External linkshttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html
http://www.openwall.com/lists/oss-security/2021/01/19/9
http://xenbits.xen.org/xsa/advisory-347.html
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
http://security.gentoo.org/glsa/202011-06
http://www.debian.org/security/2020/dsa-4804
http://xenbits.xen.org/xsa/advisory-347.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.