Vulnerability Name:

CVE-2021-28702 (CCN-210682)

Assigned:2021-10-05
Published:2021-10-05
Updated:2022-10-29
Summary:PCI devices with RMRRs not deassigned correctly Certain PCI devices in a system might be assigned Reserved Memory Regions (specified via Reserved Memory Region Reporting, "RMRR"). These are typically used for platform tasks such as legacy USB emulation. If such a device is passed through to a guest, then on guest shutdown the device is not properly deassigned. The IOMMU configuration for these devices which are not properly deassigned ends up pointing to a freed data structure, including the IO Pagetables. Subsequent DMA or interrupts from the device will have unpredictable behaviour, ranging from IOMMU faults to memory corruption.
CVSS v3 Severity:7.6 High (CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)
6.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Physical
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.6 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H)
5.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/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): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): High
CVSS v2 Severity:4.6 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
5.7 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:P/I:P/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Complete
Vulnerability Type:CWE-269
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-28702

Source: MLIST
Type: Mailing List, Third Party Advisory
[oss-security] 20211007 Xen Security Advisory 386 v2 (CVE-2021-28702) - PCI devices with RMRRs not deassigned correctly

Source: CCN
Type: Xen Security Advisory XSA-386
PCI devices with RMRRs not deassigned correctly

Source: XF
Type: UNKNOWN
xen-cve202128702-dos(210682)

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-829f5f2f43

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-0b7a484688

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-80bbe7def0

Source: GENTOO
Type: Third Party Advisory
GLSA-202208-23

Source: DEBIAN
Type: Third Party Advisory
DSA-5017

Source: MISC
Type: Vendor Advisory
https://xenbits.xenproject.org/xsa/advisory-386.txt

Vulnerable Configuration:Configuration 1:
  • cpe:/o:xen:xen:*:*:*:*:*:*:*:* (Version >= 4.13.0 and <= 4.15.1)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • 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:4.11:*:*:*:*:*:*:*
  • OR cpe:/a:xensource:xen:4.12:*:*:*:*:*:*:*
  • OR cpe:/a:xensource:xen:4.13:*:*:*:*:*:*:*
  • OR cpe:/a:xensource:xen:4.14:*:*:*:*:*:*:*
  • OR cpe:/a:xensource:xen:4.12.3:*:*:*:*:*:*:*
  • OR cpe:/a:xensource:xen:4.12.4:*:*:*:*:*:*:*
  • OR cpe:/a:xensource:xen:4.13.1:*:*:*:*:*:*:*
  • OR cpe:/a:xensource:xen:4.10:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:8007
    P
    		flatpak-builder-1.2.2-150400.1.9 on GA media (Moderate)
    2023-06-20
    oval:org.opensuse.security:def:8073
    P
    		xstream-1.4.20-150200.3.25.1 on GA media (Moderate)
    2023-06-20
    oval:org.opensuse.security:def:3536
    P
    		kbd-2.0.4-8.10.2 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3730
    P
    		openssh-7.2p2-74.45.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94648
    P
    		libjavascriptcoregtk-4_0-18-2.36.0-150400.2.13 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:100086
    P
    		 (Moderate)
    2022-03-04
    oval:org.opensuse.security:def:113592
    P
    		xen-4.16.0_01-1.1 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:9071
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:106465
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:92037
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:99576
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:92825
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:105872
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:69767
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:9627
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:98987
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:106752
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:92232
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:99775
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:106067
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:69966
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:9826
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:99182
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:92427
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:8876
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:106266
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:70517
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:10377
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:99377
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:92626
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:105677
    P
    		Security update for xen (Moderate)
    2021-12-09
    oval:org.opensuse.security:def:829
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:99442
    P
    		 (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:100693
    P
    		 (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:111827
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:67349
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:1650
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:73941
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:99705
    P
    		 (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:101560
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:100029
    P
    		 (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:64819
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:102226
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:99171
    P
    		 (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:6260
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:69162
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:42247
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:76417
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:100364
    P
    		 (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:111152
    P
    		Security update for xen (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:101361
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:96088
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:66997
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:73747
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:109444
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:102169
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:117541
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:64625
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:102778
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:5908
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:108027
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:69096
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:42143
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:76065
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:95456
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:118540
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:108835
    P
    		Security update for xen (Moderate)
    2021-12-03
    oval:org.opensuse.security:def:5162
    P
    		Security update for xen (Moderate)
    2021-12-01
    oval:org.opensuse.security:def:60425
    P
    		Security update for xen (Moderate)
    2021-12-01
    oval:org.opensuse.security:def:26175
    P
    		Security update for xen (Moderate)
    2021-12-01
    oval:org.opensuse.security:def:34602
    P
    		Security update for xen (Moderate)
    2021-12-01
    BACK
    xen xen *
    fedoraproject fedora 33
    fedoraproject fedora 34
    fedoraproject fedora 35
    debian debian linux 9.0
    xensource xen 4.4
    xensource xen 4.5
    xensource xen 4.6
    xensource xen 4.7
    xensource xen 4.8
    xensource xen 4.9
    xensource xen 4.10
    xensource xen 4.11
    xensource xen 4.12
    xensource xen 4.13
    xensource xen 4.14
    xensource xen 4.12.3
    xensource xen 4.12.4
    xensource xen 4.13.1
    xensource xen 4.10