Integer Overflow or Wraparound Affecting qemu-img package, versions <15:3.1.0-1.el7


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
5.58% (94th percentile)

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  • Snyk IDSNYK-ORACLE7-QEMUIMG-2530458
  • published10 Apr 2022
  • disclosed21 Jun 2018

Introduced: 21 Jun 2018

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

How to fix?

Upgrade Oracle:7 qemu-img to version 15:3.1.0-1.el7 or higher.
This issue was patched in ELSA-2019-4585.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-img package and not the qemu-img package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

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 Scores

version 3.1