Vulnerability Name:

CVE-2022-23033 (CCN-218055)

Assigned:2022-01-25
Published:2022-01-25
Updated:2022-08-19
Summary:arm: guest_physmap_remove_page not removing the p2m mappings The functions to remove one or more entries from a guest p2m pagetable on Arm (p2m_remove_mapping, guest_physmap_remove_page, and p2m_set_entry with mfn set to INVALID_MFN) do not actually clear the pagetable entry if the entry doesn't have the valid bit set. It is possible to have a valid pagetable entry without the valid bit set when a guest operating system uses set/way cache maintenance instructions. For instance, a guest issuing a set/way cache maintenance instruction, then calling the XENMEM_decrease_reservation hypercall to give back memory pages to Xen, might be able to retain access to those pages even after Xen started reusing them for other purposes.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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): High
Integrity (I): High
Availibility (A): High
8.4 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.3 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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): High
Integrity (I): High
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
7.2 High (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-863
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2022-23033

Source: MLIST
Type: Mailing List, Patch, Third Party Advisory
[oss-security] 20220125 Xen Security Advisory 393 v2 (CVE-2022-23033) - arm: guest_physmap_remove_page not removing the p2m mappings

Source: CCN
Type: Xen Security Advisory XSA-393
arm: guest_physmap_remove_page not removing the p2m mappings

Source: XF
Type: UNKNOWN
xen-cve202223033-priv-esc(218055)

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-0cc3916e08

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

Source: DEBIAN
Type: Third Party Advisory
DSA-5117

Source: MISC
Type: Vendor Advisory
https://xenbits.xenproject.org/xsa/advisory-393.txt

Vulnerable Configuration:Configuration 1:
  • cpe:/o:xen:xen:*:*:*:*:*:*:arm:* (Version >= 4.12.0

  • Configuration 2:
  • cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

  • Configuration 3:
  • cpe:/o:debian:debian_linux:11.0:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • 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:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7831
    P
    xen-libs-4.17.0_06-150500.1.10 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:3535
    P
    java-1_8_0-openjdk-1.8.0.222-27.35.2 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3225
    P
    libopus0-1.1-3.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94855
    P
    xen-libs-4.16.0_08-150400.2.12 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:95165
    P
    xen-4.16.0_08-150400.2.12 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:388
    P
    xen-libs-4.16.0_08-150400.2.12 on GA media (Moderate)
    2022-06-10
    oval:org.opensuse.security:def:119303
    P
    Security update for xen (Important)
    2022-02-17
    oval:org.opensuse.security:def:118808
    P
    Security update for xen (Important)
    2022-02-17
    oval:org.opensuse.security:def:119486
    P
    Security update for xen (Important)
    2022-02-17
    oval:org.opensuse.security:def:118998
    P
    Security update for xen (Important)
    2022-02-17
    oval:org.opensuse.security:def:42195
    P
    Security update for xen (Important)
    2022-02-17
    oval:org.opensuse.security:def:119671
    P
    Security update for xen (Important)
    2022-02-17
    oval:org.opensuse.security:def:5344
    P
    Security update for xen (Important)
    2022-02-17
    oval:org.opensuse.security:def:119105
    P
    Security update for xen (Important)
    2022-02-17
    oval:org.opensuse.security:def:6162
    P
    Security update for xen (Important)
    2022-02-17
    oval:org.opensuse.security:def:102247
    P
    Security update for xen (Important)
    2022-02-04
    oval:org.opensuse.security:def:99208
    P
    (Important)
    2022-02-04
    oval:org.opensuse.security:def:100412
    P
    (Important)
    2022-02-04
    oval:org.opensuse.security:def:937
    P
    Security update for xen (Important)
    2022-02-04
    oval:org.opensuse.security:def:99482
    P
    (Important)
    2022-02-04
    oval:org.opensuse.security:def:100746
    P
    (Important)
    2022-02-04
    oval:org.opensuse.security:def:1686
    P
    Security update for xen (Important)
    2022-02-04
    oval:org.opensuse.security:def:99744
    P
    (Important)
    2022-02-04
    oval:org.opensuse.security:def:42335
    P
    Security update for xen (Important)
    2022-02-04
    oval:org.opensuse.security:def:101629
    P
    Security update for xen (Important)
    2022-02-04
    oval:org.opensuse.security:def:100074
    P
    (Important)
    2022-02-04
    BACK
    xen xen *
    fedoraproject fedora 34
    debian debian linux 11.0
    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