Access of Uninitialized Pointer Affecting libvirt package, versions <0:6.0.0-37.module+el8.5.0+670+c4aa478c


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-ROCKY8-LIBVIRT-3285761
  • published5 Jan 2023
  • disclosed15 Jun 2021

Introduced: 15 Jun 2021

CVE-2021-3595  (opens in a new tab)
CWE-824  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 libvirt to version 0:6.0.0-37.module+el8.5.0+670+c4aa478c or higher.
This issue was patched in RLSA-2021:4191.

NVD Description

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

An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the tftp_input() function and could occur while processing a udp packet that is smaller than the size of the 'tftp_t' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.

CVSS Scores

version 3.1