Access of Uninitialized Pointer Affecting libslirp package, versions [,4.6.0)


Severity

Recommended
0.0
low
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-UNMANAGED-LIBSLIRP-2371756
  • published26 Jan 2022
  • disclosed15 Jun 2021
  • creditUnknown

Introduced: 15 Jun 2021

CVE-2021-3593  (opens in a new tab)
CWE-824  (opens in a new tab)

How to fix?

Upgrade libslirp to version 4.6.0 or higher.

Overview

Affected versions of this package are vulnerable to Access of Uninitialized Pointer. An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the size of the 'udphdr' 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