CVE-2020-1711

medium

Description

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU versions 2.12.0 before 4.2.1 handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1711

https://www.openwall.com/lists/oss-security/2020/01/23/3

https://lists.gnu.org/archive/html/qemu-devel/2020-01/msg05535.html

https://usn.ubuntu.com/4283-1/

https://access.redhat.com/errata/RHSA-2020:0669

https://access.redhat.com/errata/RHSA-2020:0730

https://access.redhat.com/errata/RHSA-2020:0731

https://access.redhat.com/errata/RHSA-2020:0773

https://lists.debian.org/debian-lts-announce/2020/03/msg00017.html

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html

https://security.gentoo.org/glsa/202005-02

https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html

Details

Source: MITRE

Published: 2020-02-11

Updated: 2022-04-05

Type: CWE-787

Risk Information

CVSS v2

Base Score: 6

Vector: AV:N/AC:M/Au:S/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 6.8

Severity: MEDIUM

CVSS v3

Base Score: 6

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

Impact Score: 3.7

Exploitability Score: 1.8

Severity: MEDIUM