Out-of-bounds Write Affecting ocaml-libguestfs package, versions <1:1.40.2-27.0.1.module+el8.4.0+20093+03a97712


Severity

Recommended
0.0
medium
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ORACLE8-OCAMLLIBGUESTFS-2582176
  • published10 Apr 2022
  • disclosed8 Dec 2020

Introduced: 8 Dec 2020

CVE-2020-27821  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:8 ocaml-libguestfs to version 1:1.40.2-27.0.1.module+el8.4.0+20093+03a97712 or higher.
This issue was patched in ELSA-2021-1762.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ocaml-libguestfs package and not the ocaml-libguestfs package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

CVSS Scores

version 3.1