CVE-2021-3592

low

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1970484

https://lists.fedoraproject.org/archives/list/[email protected]/message/SGPQZFVJCFGDSISFXPCQTTBBD7QZLJKI/

https://lists.fedoraproject.org/archives/list/[email protected]/message/GCKWZWY64EHTOQMLVLTSZ4AA27EWRJMH/

https://security.gentoo.org/glsa/202107-44

https://security.netapp.com/advisory/ntap-20210805-0004/

https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html

https://lists.debian.org/debian-lts-announce/2021/09/msg00004.html

Details

Source: MITRE

Published: 2021-06-15

Updated: 2021-09-21

Type: CWE-824

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 3.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Impact Score: 1.4

Exploitability Score: 2

Severity: LOW