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.

Metrics

CVSS 3.1 6.0/10CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L

Weakness enumeration

CWE-122 CWE-787

Affected software

Vendor	Product	Versions
Red Hat	QEMU	All qemu versions 2.12.0 before 4.2.1

References

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.htmlThird Party Advisory
https://access.redhat.com/errata/RHSA-2020:0669Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0730Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0731Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0773Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1711Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00017.htmlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00013.htmlMailing List, Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2020-01/msg05535.htmlMailing List, Patch, Third Party Advisory
https://security.gentoo.org/glsa/202005-02Third Party Advisory
https://usn.ubuntu.com/4283-1/Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/01/23/3Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.htmlThird Party Advisory
https://access.redhat.com/errata/RHSA-2020:0669Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0730Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0731Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0773Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1711Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00017.htmlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00013.htmlMailing List, Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2020-01/msg05535.htmlMailing List, Patch, Third Party Advisory
https://security.gentoo.org/glsa/202005-02Third Party Advisory
https://usn.ubuntu.com/4283-1/Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/01/23/3Mailing List, Third Party Advisory

Timeline

Published: Feb 11, 2020
Last modified: Jun 17, 2026
NVD status: Modified