Vulnerability Name:

CVE-2022-23034 (CCN-218054)

Assigned:2022-01-25
Published:2022-01-25
Updated:2022-08-19
Summary:A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/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): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
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-191
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2022-23034

Source: MLIST
Type: Mailing List, Third Party Advisory
[oss-security] 20220125 Xen Security Advisory 394 v3 (CVE-2022-23034) - A PV guest could DoS Xen while unmapping a grant

Source: CCN
Type: Xen Security Advisory XSA-394
A PV guest could DoS Xen while unmapping a grant

Source: XF
Type: UNKNOWN
xen-cve202223034-dos(218054)

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: Patch, Vendor Advisory
https://xenbits.xenproject.org/xsa/advisory-394.txt

Vulnerable Configuration:Configuration 1:
  • cpe:/o:xen:xen:*:*:*:*:*:*:x86:* (Version >= 3.2.0 and < 4.13.0)

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

  • Configuration 3:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:11.0:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/a:xensource:xen:*:*:*:*:*:*:*:*

  • * 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:126957
    P
    Security update for xen (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:127355
    P
    Security update for xen (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:125794
    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 9.0
    debian debian linux 11.0
    xensource xen *