Vulnerability Name:

CVE-2020-13791 (CCN-182973)

Assigned:2020-06-04
Published:2020-06-04
Updated:2020-12-14
Summary:hw/pci/pci.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access by providing an address near the end of the PCI configuration space.
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
4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
3.5 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/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): Low
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
2.1 Low (CCN 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
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-125
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-13791

Source: XF
Type: UNKNOWN
qemu-cve202013791-dos(182973)

Source: MISC
Type: Mailing List, Patch, Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2020-06/msg00706.html

Source: CCN
Type: qemu-devel Web site
[PATCH v2 1/2] ait-vga: check address before reading configuration bytes

Source: CCN
Type: oss-sec Mailing List, Thu, 4 Jun 2020 10:30:41 +0530 (IST)
CVE-2020-13791 QEMU: ati-vga: OOB access while reading PCI configuration may lead to DoS

Source: GENTOO
Type: Third Party Advisory
GLSA-202011-09

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20200717-0001/

Source: CONFIRM
Type: Mailing List, Patch, Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/06/04/1

Vulnerable Configuration:Configuration 1:
  • cpe:/a:qemu:qemu:*:*:*:*:*:*:*:* (Version <= 5.0.1)

    • Configuration CCN 1:
  • cpe:/a:qemu:qemu:4.2.0:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    qemu qemu *
    qemu qemu 4.2.0