CVE-2018-17963
QEMU: net: ignore packets with large size
Severity Score
9.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
qemu_deliver_packet_iov in net/net.c in Qemu accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.
qemu_deliver_packet_iov en net/net.c en Qemu acepta tamaños de paquetes mayores a INT_MAX, lo que permite que los atacantes provoquen una denegación de servicio (DoS) o tengan otro tipo de impacto sin especificar.
A potential integer overflow issue was found in the networking back-end of QEMU. It could occur while receiving packets, because it accepted packets with large size value. Such overflow could lead to OOB buffer access issue. A user inside guest could use this flaw to crash the QEMU process resulting in DoS.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2018-10-03 CVE Reserved
- 2018-10-09 CVE Published
- 2024-07-24 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-121: Stack-based Buffer Overflow
- CWE-190: Integer Overflow or Wraparound
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2018/10/08/1 | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html | Mailing List |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03267.html | 2021-08-04 | |
| https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg06054.html | 2021-08-04 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2019:2166 | 2021-08-04 | |
| https://access.redhat.com/errata/RHSA-2019:2425 | 2021-08-04 | |
| https://access.redhat.com/errata/RHSA-2019:2553 | 2021-08-04 | |
| https://usn.ubuntu.com/3826-1 | 2021-08-04 | |
| https://www.debian.org/security/2018/dsa-4338 | 2021-08-04 | |
| https://access.redhat.com/security/cve/CVE-2018-17963 | 2019-08-22 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1636777 | 2019-08-22 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | <= 3.0.0 Search vendor "Qemu" for product "Qemu" and version " <= 3.0.0" | - |
Affected
| ||||||
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | 3.1.0 Search vendor "Qemu" for product "Qemu" and version "3.1.0" | rc0 |
Affected
| ||||||
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | 3.1.0 Search vendor "Qemu" for product "Qemu" and version "3.1.0" | rc1 |
Affected
| ||||||
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | 3.1.0 Search vendor "Qemu" for product "Qemu" and version "3.1.0" | rc2 |
Affected
| ||||||
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | 3.1.0 Search vendor "Qemu" for product "Qemu" and version "3.1.0" | rc3 |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Openstack Search vendor "Redhat" for product "Openstack" | 10 Search vendor "Redhat" for product "Openstack" and version "10" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Openstack Search vendor "Redhat" for product "Openstack" | 13 Search vendor "Redhat" for product "Openstack" and version "13" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Openstack Search vendor "Redhat" for product "Openstack" | 14 Search vendor "Redhat" for product "Openstack" and version "14" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Virtualization Search vendor "Redhat" for product "Virtualization" | 4.0 Search vendor "Redhat" for product "Virtualization" and version "4.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Virtualization Manager Search vendor "Redhat" for product "Virtualization Manager" | 4.3 Search vendor "Redhat" for product "Virtualization Manager" and version "4.3" | - |
Affected
| ||||||