CVE-2016-9603

Advisory lineage Upstream: 0 Downstream: 31
Modified
Published: 27 Jul 2018, 21:00
Last modified:06 Aug 2024, 02:59

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.9 CRITICAL
v3.0 (nvd)
EPSS Score
0.63% LOW
1% probability -0.75%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Jul 2018, 21:00
Published
Vulnerability first disclosed
06 Aug 2024, 02:59
Last Modified
Vulnerability information updated

Description

A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.5CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
  • v3.0•CRITICAL•Score: 9.9CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • v2.0•HIGH•Score: 9AV:N/AC:L/Au:S/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.63%• Percentile: 71%

Techniques & Countermeasures

  • CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer

    The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

  • CWE-122•Heap-based Buffer Overflow

    A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Affected Systems

  • citrix•xenserver

    6.0.2 | 6.2.0:sp1 | 6.5:sp1 | 7.0 | 7.1

  • debian•debian_linux

    7.0

  • qemu•qemu

    < 2.9.0

  • qemu•qemu:

    2.9

  • redhat•enterprise_linux_desktop

    6.0 | 7.0

  • redhat•enterprise_linux_server

    6.0 | 7.0

  • redhat•enterprise_linux_server_aus

    7.3 | 7.4

  • redhat•enterprise_linux_server_eus

    7.3 | 7.4 | 7.5

  • redhat•enterprise_linux_workstation

    6.0 | 7.0

  • redhat•openstack

    5.0 | 6.0 | 7.0 | 8 | 9 | 10

References (18)