Integer Overflow or Wraparound Affecting qemu-project/qemu package, versions [,3.0.0)


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
25.05% (98th percentile)

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  • Snyk IDSNYK-UNMANAGED-QEMUPROJECTQEMU-3006997
  • published26 Jan 2022
  • disclosed21 Jun 2018
  • creditUnknown

Introduced: 21 Jun 2018

CVE-2018-12617  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade qemu-project/qemu to version 3.0.0 or higher.

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP command (including guest-file-read with a large count value) to the agent via the listening socket.

CVSS Base Scores

version 3.1