Vulnerability Name:

CVE-2020-27661 (CCN-202965)

Assigned:2020-10-15
Published:2020-10-15
Updated:2022-05-13
Summary:A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.
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)
5.9 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:P/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
6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H)
5.9 Medium (CCN 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:P/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
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
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-369
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-27661

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1890653

Source: XF
Type: UNKNOWN
qemu-cve202027661-dos(202965)

Source: MISC
Type: Patch, Vendor Advisory
https://git.qemu.org/?p=qemu.git;a=commit;h=bea2a9e3e00b275dc40cfa09c760c715b8753e03

Source: CCN
Type: qemu-devel Web site
[PATCH v2] hw/usb/hcd-dwc2: fix divide-by-zero in dwc2_handle_packet()

Source: MISC
Type: Mailing List, Patch, Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg04263.html

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20210720-0010/

Source: MISC
Type: Patch, Third Party Advisory
https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1770368.html

Source: CCN
Type: QEMU
QEMU

Vulnerable Configuration:Configuration 1:
  • cpe:/a:qemu:qemu:*:*:*:*:*:*:*:* (Version <= 5.1.1)

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

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