| Vulnerability Name: | CVE-2021-28039 (CCN-197734) |
| Assigned: | 2021-02-16 |
| Published: | 2021-02-16 |
| Updated: | 2022-07-12 |
| Summary: | An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.
|
| CVSS v3 Severity: | 6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)| Exploitability Metrics: | Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None | | Scope: | Scope (S): Changed
| | Impact Metrics: | Confidentiality (C): None
Integrity (I): None
Availibility (A): High |
6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)| Exploitability Metrics: | Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None | | Scope: | Scope (S): Unchanged
| | Impact Metrics: | Confidentiality (C): None
Integrity (I): None
Availibility (A): High |
|
| CVSS v2 Severity: | 2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)| Exploitability Metrics: | Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None | | Impact Metrics: | Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial |
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)| Exploitability Metrics: | Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
| | Impact Metrics: | Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete |
|
| Vulnerability Type: | CWE-131
|
| Vulnerability Consequences: | Denial of Service |
| References: | Source: MITRE
Type: CNA
CVE-2021-28039
Source: MLIST
Type: Mailing List, Patch, Third Party Advisory
[oss-security] 20210305 Xen Security Advisory 369 v2 (CVE-2021-28039) - Linux: special config may crash when trying to map foreign pages
Source: CCN
Type: Xen Security Advisory XSA-369
Linux: special config may crash when trying to map foreign pages
Source: MISC
Type: Patch, Vendor Advisory
http://xenbits.xen.org/xsa/advisory-369.html
Source: XF
Type: UNKNOWN
xen-special-config-dos(197734)
Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20210409-0001/
|
| Vulnerable Configuration: | Configuration 1:
cpe:/o:xen:xen:-:*:*:*:*:*:*:*AND cpe:/o:linux:linux_kernel:*:*:*:*:*:*:x86:* (Version >= 5.9.0 and <= 5.11.3)
Configuration 2:
cpe:/a:netapp:cloud_backup:-:*:*:*:*:*:*:*OR cpe:/o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
Configuration CCN 1:
cpe:/a:xensource:xen:4.0:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.1.1:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.1.2:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.1:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.4:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.5:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.6:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.7:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.8:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.9:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.10:*:*:*:*:*:*:*OR cpe:/a:xensource:xen:4.13.1:*:*:*:*:*:*:*
 Denotes that component is vulnerable |
| BACK |