// For flags

CVE-2014-0143

Qemu: block: multiple integer overflow flaws

Severity Score

7.0
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Multiple integer overflows in the block drivers in QEMU, possibly before 2.0.0, allow local users to cause a denial of service (crash) via a crafted catalog size in (1) the parallels_open function in block/parallels.c or (2) bochs_open function in bochs.c, a large L1 table in the (3) qcow2_snapshot_load_tmp in qcow2-snapshot.c or (4) qcow2_grow_l1_table function in qcow2-cluster.c, (5) a large request in the bdrv_check_byte_request function in block.c and other block drivers, (6) crafted cluster indexes in the get_refcount function in qcow2-refcount.c, or (7) a large number of blocks in the cloop_open function in cloop.c, which trigger buffer overflows, memory corruption, large memory allocations and out-of-bounds read and writes.

Múltiples desbordamientos de enteros en los controladores de bloque en QEMU, posiblemente en versiones anteriores a la 2.0.0, permiten que usuarios locales provoquen una denegación de servicio mediante un tamaño de catálogo manipulado en (1) la función parallels_open en block/parallels.c o (2) la función bochs_open en bochs.c, una gran tabla en (3) qcow2_snapshot_load_tmp en qcow2-snapshot.c o en la función (4) qcow2_grow_l1_table en qcow2-cluster.c, (5) una gran petición en la función bdrv_check_byte_request en block.c y otros controladores de bloqueo, (6) índices de clúster manipulados en la función get_refcount en qcow2-refcount.c, o (7) un gran número de bloqueos en la función cloop_open en cloop.c. Esto provoca desbordamientos de búfer, corrupción de memoria, grandes asignaciones de memoria y lesturas y escrituras fuera de límites.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
Attack Vector
Adjacent
Attack Complexity
High
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2013-12-03 CVE Reserved
  • 2014-04-22 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-06 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-190: Integer Overflow or Wraparound
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
Search vendor "Redhat"
Enterprise Linux
Search vendor "Redhat" for product "Enterprise Linux"
6.0
Search vendor "Redhat" for product "Enterprise Linux" and version "6.0"
-
Affected
Qemu
Search vendor "Qemu"
Qemu
Search vendor "Qemu" for product "Qemu"
<= 1.7.1
Search vendor "Qemu" for product "Qemu" and version " <= 1.7.1"
-
Affected