{"id":"CVE-2020-1711","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-1711","generatedAt":"2026-10-27T20:22:17.604Z","title":"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…","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.","published":"2020-02-11T20:15:11.000Z","lastModified":"2026-06-17T03:02:15.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":6,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L"},"cwe":["CWE-122","CWE-787"],"affected":["qemu/qemu","redhat/openstack","redhat/enterprise linux","debian/debian linux","opensuse/leap"],"epss":{"score":0.04018,"percentile":0.90502,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (4.02%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2020:0669","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2020:0730","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2020:0731","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2020:0773","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1711","tags":["Issue Tracking","Patch","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://lists.debian.org/debian-lts-announce/2020/03/msg00017.html","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://lists.gnu.org/archive/html/qemu-devel/2020-01/msg05535.html","tags":["Mailing List","Patch","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://security.gentoo.org/glsa/202005-02","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://usn.ubuntu.com/4283-1/","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://www.openwall.com/lists/oss-security/2020/01/23/3","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0669","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0730","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0731","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0773","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1711","tags":["Issue Tracking","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/03/msg00017.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.gnu.org/archive/html/qemu-devel/2020-01/msg05535.html","tags":["Mailing List","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202005-02","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4283-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.openwall.com/lists/oss-security/2020/01/23/3","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-1711","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}