CVEvulnerability

CVE-2021-3592

3.8 LOW Published 2021-06-15 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-06-15
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.8 LOW — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CVSS 2.0 ([email protected])
2.1 LOW — AV:L/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-824

Description

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.

Affected configurations

• libslirp project libslirp (< 4.6.0) • redhat enterprise linux 8.0 • debian debian linux 9.0 • fedoraproject fedora 33 • fedoraproject fedora 34

Related

Weakness · CWE (1)

  • CWE-824 Access of Uninitialized Pointer weakness

References