CVE-2020-25602
Xen Intel MSR Miscellaneous Enable Denial of Service
Description
An issue was discovered in Xen through 4.14.x. An x86 PV guest can trigger a host OS crash when handling guest access to MSR_MISC_ENABLE. When a guest accesses certain Model Specific Registers, Xen first reads the value from hardware to use as the basis for auditing the guest access. For the MISC_ENABLE MSR, which is an Intel specific MSR, this MSR read is performed without error handling for a #GP fault, which is the consequence of trying to read this MSR on non-Intel hardware. A buggy or malicious PV guest administrator can crash Xen, resulting in a host Denial of Service. Only x86 systems are vulnerable. ARM systems are not vulnerable. Only Xen versions 4.11 and onwards are vulnerable. 4.10 and earlier are not vulnerable. Only x86 systems that do not implement the MISC_ENABLE MSR (0x1a0) are vulnerable. AMD and Hygon systems do not implement this MSR and are vulnerable. Intel systems do implement this MSR and are not vulnerable. Other manufacturers have not been checked. Only x86 PV guests can exploit the vulnerability. x86 HVM/PVH guests cannot exploit the vulnerability.
INFO
Published Date :
Sept. 23, 2020, 10:15 p.m.
Last Modified :
Nov. 7, 2023, 3:20 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.0
Exploitability Score :
1.5
Affected Products
The following products are affected by CVE-2020-25602
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-25602.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-25602 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-25602 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JRXMKEMQRQYWYEPHVBIWUEAVQ3LU4FN/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA633Y3G5KX7MKRN4PFEGM3IVTJMBEOM/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJZERRBJN6E6STDCHT4JHP4MI6TKBCJE/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/4JRXMKEMQRQYWYEPHVBIWUEAVQ3LU4FN/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/DA633Y3G5KX7MKRN4PFEGM3IVTJMBEOM/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/RJZERRBJN6E6STDCHT4JHP4MI6TKBCJE/ -
Modified Analysis by [email protected]
Sep. 30, 2022
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/RJZERRBJN6E6STDCHT4JHP4MI6TKBCJE/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/RJZERRBJN6E6STDCHT4JHP4MI6TKBCJE/ Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202011-06 No Types Assigned https://security.gentoo.org/glsa/202011-06 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 11, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202011-06 [No Types Assigned] -
CPE Deprecation Remap by [email protected]
Oct. 28, 2020
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:x86:*:* versions from (including) 4.11.0 from (including) 4.14.0 OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions from (including) 4.11.0 from (including) 4.14.0 -
CVE Modified by [email protected]
Oct. 07, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/RJZERRBJN6E6STDCHT4JHP4MI6TKBCJE/ [No Types Assigned] -
Initial Analysis by [email protected]
Oct. 05, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:S/C:N/I:N/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00008.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00008.html Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/4JRXMKEMQRQYWYEPHVBIWUEAVQ3LU4FN/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/4JRXMKEMQRQYWYEPHVBIWUEAVQ3LU4FN/ Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/DA633Y3G5KX7MKRN4PFEGM3IVTJMBEOM/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/DA633Y3G5KX7MKRN4PFEGM3IVTJMBEOM/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4769 No Types Assigned https://www.debian.org/security/2020/dsa-4769 Third Party Advisory Changed Reference Type https://xenbits.xen.org/xsa/advisory-333.html No Types Assigned https://xenbits.xen.org/xsa/advisory-333.html Patch, Vendor Advisory Added CWE NIST CWE-755 Added CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:x86:*:* versions from (including) 4.11.0 up to (including) 4.14.0 -
CVE Modified by [email protected]
Oct. 04, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00008.html [No Types Assigned] -
CVE Modified by [email protected]
Oct. 03, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4769 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 01, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/DA633Y3G5KX7MKRN4PFEGM3IVTJMBEOM/ [No Types Assigned] -
CVE Modified by [email protected]
Sep. 27, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/4JRXMKEMQRQYWYEPHVBIWUEAVQ3LU4FN/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-25602 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-25602
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.12065
percentile