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TI-2020-01657 Aliases CVE-2020-1711GHSA-8gvc-95pj-x5r8

Heap-based buffer overflow in Red Hat QEMU

Priority MEDIUM 40CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
Low · Low · High
Fix status
Partial Red Hat: 19 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.04018 90th percentileScored 2026-11-07
Fix Partial Red Hat: 12 advisoriesRed Hat: 19 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatQEMU2.12.0 to before 4.2.14.2.1Patch availableCNA
  • QEMU VendorRed Hat Affected 2.12.0 to before 4.2.1 Fixed in 4.2.1 Patch available CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*2.12.0 to before 4.2.1VulnerableQEMU
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*10VulnerableRed Hat
cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*13VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
  • cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* Versions 2.12.0 to before 4.2.1 Vulnerable ·QEMU
  • cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* Versions 10 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* Versions 13 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE

Remediation

Red Hat 12 advisories

  • RHSA-2020:2472 Released 2020-06-10 · Red Hat rating Important
    virt:rhel security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.0) SLOF-20171214-6.gitfa98132.module+el8.0.0+4084+cceb9f44.noarch::virt:rhel, SLOF-20171214-6.gitfa98132.module+el8.0.0+4084+cceb9f44.src::virt:rhel, hivex-1.3.15-7.module+el8.0.0+4084+cceb9f44.ppc64le::virt:rhel +47
  • RHSA-2020:1505 Released 2020-04-21 · Red Hat rating Important
    qemu-kvm-ma security update
    • Red Hat Enterprise Linux Server EUS (v. 7.5) qemu-img-ma-10:2.10.0-21.el7_5.5, qemu-kvm-common-ma-10:2.10.0-21.el7_5.5, qemu-kvm-ma-10:2.10.0-21.el7_5.5 +1
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.5) qemu-kvm-common-ma-10:2.10.0-21.el7_5.5, qemu-kvm-ma-10:2.10.0-21.el7_5.5, qemu-kvm-tools-ma-10:2.10.0-21.el7_5.5
  • RHSA-2020:1358 Released 2020-04-07 · Red Hat rating Important
    virt:rhel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) SLOF-20171214-6.gitfa98132.module+el8.1.0+4066+0f1aadab.src::virt-devel:rhel, hivex-1.3.15-7.module+el8.1.0+4066+0f1aadab.i686::virt-devel:rhel, hivex-devel-1.3.15-7.module+el8.1.0+4066+0f1aadab.i686::virt-devel:rhel +47
    • Red Hat Enterprise Linux AppStream (v. 8) SLOF-20171214-6.gitfa98132.module+el8.1.0+4066+0f1aadab.noarch::virt:rhel, SLOF-20171214-6.gitfa98132.module+el8.1.0+4066+0f1aadab.src::virt:rhel, hivex-1.3.15-7.module+el8.1.0+4066+0f1aadab.aarch64::virt:rhel +47
Show 9 more Red Hat advisories
  • RHSA-2020:1352 Released 2020-04-07 · Red Hat rating Important
    qemu-kvm-ma security update
    • Red Hat Enterprise Linux Server EUS (v. 7.7) qemu-img-ma-10:2.12.0-33.el7_7.3, qemu-kvm-common-ma-10:2.12.0-33.el7_7.3, qemu-kvm-ma-10:2.12.0-33.el7_7.3 +1
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.7) qemu-kvm-common-ma-10:2.12.0-33.el7_7.3, qemu-kvm-ma-10:2.12.0-33.el7_7.3, qemu-kvm-tools-ma-10:2.12.0-33.el7_7.3
  • RHSA-2020:1300 Released 2020-04-02 · Red Hat rating Important
    qemu-kvm-rhev security update
    • Red Hat OpenStack Platform 10.0 qemu-img-rhev-10:2.12.0-33.el7_7.10, qemu-kvm-common-rhev-10:2.12.0-33.el7_7.10, qemu-kvm-rhev-10:2.12.0-33.el7_7.10 +1
  • RHSA-2020:1296 Released 2020-04-02 · Red Hat rating Important
    qemu-kvm-rhev security update
    • Red Hat OpenStack Platform 13.0 qemu-img-rhev-10:2.12.0-44.el7, qemu-kvm-common-rhev-10:2.12.0-44.el7, qemu-kvm-rhev-10:2.12.0-44.el7 +1
  • RHSA-2020:1150 Released 2020-03-31 · Red Hat rating Important
    qemu-kvm-ma security update
    • Red Hat Enterprise Linux Server (v. 7) qemu-img-ma-10:2.12.0-44.el7, qemu-kvm-common-ma-10:2.12.0-44.el7, qemu-kvm-ma-10:2.12.0-44.el7 +1
    • Red Hat Enterprise Linux Server Optional (v. 7) qemu-kvm-common-ma-10:2.12.0-44.el7, qemu-kvm-ma-10:2.12.0-44.el7, qemu-kvm-tools-ma-10:2.12.0-44.el7
  • RHSA-2020:1216 Released 2020-03-31 · Red Hat rating Important
    qemu-kvm-rhev security, bug fix, and enhancement update
    • RHV-M 4.3 qemu-img-rhev-10:2.12.0-44.el7, qemu-kvm-common-rhev-10:2.12.0-44.el7, qemu-kvm-rhev-10:2.12.0-44.el7 +1
    • Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts qemu-img-rhev-10:2.12.0-44.el7, qemu-kvm-common-rhev-10:2.12.0-44.el7, qemu-kvm-rhev-10:2.12.0-44.el7 +1
  • RHSA-2020:0773 Released 2020-03-10 · Red Hat rating Important
    qemu-kvm-rhev security update
    • Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server qemu-img-rhev-10:2.12.0-18.el7_6.9, qemu-kvm-common-rhev-10:2.12.0-18.el7_6.9, qemu-kvm-rhev-10:2.12.0-18.el7_6.9 +1
  • RHSA-2020:0731 Released 2020-03-05 · Red Hat rating Important
    virt:8.1 and virt-devel:8.1 security and enhancement update
    • Advanced Virtualization CodeReady Builder for RHEL 8.1.1 SLOF-20190703-1.gitba1ab360.module+el8.1.1+5309+6d656f05.src::virt-devel:8.1, hivex-1.3.15-7.module+el8.1.1+5309+6d656f05.i686::virt-devel:8.1, hivex-devel-1.3.15-7.module+el8.1.1+5309+6d656f05.i686::virt-devel:8.1 +47
    • Advanced Virtualization for RHEL 8.1.1 SLOF-20190703-1.gitba1ab360.module+el8.1.1+5309+6d656f05.noarch::virt:8.1, SLOF-20190703-1.gitba1ab360.module+el8.1.1+5309+6d656f05.src::virt:8.1, hivex-1.3.15-7.module+el8.1.1+5309+6d656f05.aarch64::virt:8.1 +47
  • RHSA-2020:0730 Released 2020-03-05 · Red Hat rating Important
    qemu-kvm-rhev security, bug fix, and enhancement update
    • RHV-M 4.2 qemu-img-rhev-10:2.12.0-18.el7_6.9, qemu-kvm-common-rhev-10:2.12.0-18.el7_6.9, qemu-kvm-rhev-10:2.12.0-18.el7_6.9 +1
  • RHSA-2020:0669 Released 2020-03-03 · Red Hat rating Important
    qemu-kvm-ma security update
    • Red Hat Enterprise Linux Server EUS (v. 7.6) qemu-img-ma-10:2.12.0-18.el7_6.5, qemu-kvm-common-ma-10:2.12.0-18.el7_6.5, qemu-kvm-ma-10:2.12.0-18.el7_6.5 +1
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) qemu-img-ma-10:2.12.0-18.el7_6.5, qemu-kvm-common-ma-10:2.12.0-18.el7_6.5, qemu-kvm-ma-10:2.12.0-18.el7_6.5 +1

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 8 Advanced VirtualizationAffectedNo fix yet
Advanced Virtualization CodeReady Builder for RHEL 8.1.1Fixed RHSA-2020:0731
Advanced Virtualization for RHEL 8.1.1Fixed RHSA-2020:0731
RHV-M 4.2Fixed RHSA-2020:0730
RHV-M 4.3Fixed RHSA-2020:1216
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2020:1358
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2020:1358
Red Hat Enterprise Linux AppStream E4S (v. 8.0)Fixed RHSA-2020:2472
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:1150
Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2020:1505
Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2020:0669
Red Hat Enterprise Linux Server EUS (v. 7.7)Fixed RHSA-2020:1352
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:1150
Red Hat Enterprise Linux Server Optional EUS (v. 7.5)Fixed RHSA-2020:1505
Red Hat Enterprise Linux Server Optional EUS (v. 7.7)Fixed RHSA-2020:1352
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2020:0669
Red Hat OpenStack Platform 10.0Fixed RHSA-2020:1300
Red Hat OpenStack Platform 13.0Fixed RHSA-2020:1296
Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS ServerFixed RHSA-2020:0773
Red Hat Virtualization 4 Management Agent for RHEL 7 HostsFixed RHSA-2020:1216
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-1711
  2. 2026-10-03 Alias added: GHSA-8gvc-95pj-x5r8

References

Patch 2

Advisory 10

  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-10530 Code injection in [UNKNOWN] RichFaces KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-23530 Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf… KEVCVSS 3.1CRITICAL 9.3
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
See all 1955 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences