Access of Uninitialized Pointer Affecting libslirp package, versions <4.4.0-1+deb11u2


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.05% (21st percentile)

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  • Snyk IDSNYK-DEBIAN11-LIBSLIRP-1310945
  • published16 Jun 2021
  • disclosed15 Jun 2021

Introduced: 15 Jun 2021

CVE-2021-3592  (opens in a new tab)
CWE-824  (opens in a new tab)

How to fix?

Upgrade Debian:11 libslirp to version 4.4.0-1+deb11u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libslirp package and not the libslirp package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.

CVSS Base Scores

version 3.1