// For flags

CVE-2016-2857

Qemu: net: out of bounds read in net_checksum_calculate()

Severity Score

8.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The net_checksum_calculate function in net/checksum.c in QEMU allows local guest OS users to cause a denial of service (out-of-bounds heap read and crash) via the payload length in a crafted packet.

La función net_checksum_calculate en net/checksum.c en QEMU permite a usuarios del SO invitado provocar una denegación de servicio (lectura de memoria dinámica fuera de rango y caída) a través de una longitud de la carga útil en un paquete manipulado.

An out-of-bounds read-access flaw was found in the QEMU emulator built with IP checksum routines. The flaw could occur when computing a TCP/UDP packet's checksum, because a QEMU function used the packet's payload length without checking against the data buffer's size. A user inside a guest could use this flaw to crash the QEMU process (denial of service).

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
High
Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
Low
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
Partial
Attack Vector
Adjacent
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-03-06 CVE Reserved
  • 2016-04-08 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-125: Out-of-bounds Read
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
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Openstack
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5.0
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-
Affected
in Redhat
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Enterprise Linux
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7.0
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-
Safe
Redhat
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Virtualization
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3.0
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-
Affected
in Redhat
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Enterprise Linux
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7.0
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-
Safe
Redhat
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Virtualization
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4.0
Search vendor "Redhat" for product "Virtualization" and version "4.0"
-
Affected
in Redhat
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Enterprise Linux
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7.0
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-
Safe
Redhat
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Openstack
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5.0
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-
Affected
in Redhat
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Enterprise Linux
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6.0
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-
Safe
Redhat
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Virtualization
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3.0
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-
Affected
in Redhat
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Enterprise Linux
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6.0
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-
Safe
Qemu
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Qemu
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<= 2.5.1.1
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-
Affected
Canonical
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Ubuntu Linux
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12.04
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esm
Affected
Canonical
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Ubuntu Linux
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14.04
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esm
Affected
Canonical
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Ubuntu Linux
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15.10
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-
Affected
Canonical
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Ubuntu Linux
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16.04
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lts
Affected
Debian
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Debian Linux
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8.0
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-
Affected
Redhat
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Openstack
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6.0
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-
Affected
Redhat
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Openstack
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7.0
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-
Affected
Redhat
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Openstack
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8
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-
Affected
Redhat
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Openstack
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9
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-
Affected
Redhat
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Enterprise Linux Desktop
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6.0
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-
Affected
Redhat
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Enterprise Linux Desktop
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7.0
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-
Affected
Redhat
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Enterprise Linux Eus
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7.3
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Affected
Redhat
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Enterprise Linux Eus
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7.4
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Affected
Redhat
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Enterprise Linux Eus
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7.5
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Affected
Redhat
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Enterprise Linux Eus
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7.6
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-
Affected
Redhat
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Enterprise Linux Eus
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7.7
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-
Affected
Redhat
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Enterprise Linux Server
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6.0
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Affected
Redhat
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Enterprise Linux Server
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7.0
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-
Affected
Redhat
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Enterprise Linux Server Aus
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7.3
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Affected
Redhat
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Enterprise Linux Server Aus
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7.4
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Affected
Redhat
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Enterprise Linux Server Aus
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7.6
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Affected
Redhat
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Enterprise Linux Server Aus
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7.7
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Affected
Redhat
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Enterprise Linux Server Tus
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7.3
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Affected
Redhat
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Enterprise Linux Server Tus
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7.6
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Affected
Redhat
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Enterprise Linux Server Tus
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7.7
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Affected
Redhat
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Enterprise Linux Workstation
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6.0
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Affected
Redhat
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Enterprise Linux Workstation
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7.0
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Affected