Resource allocation without limits in Qemu
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 13 fixed, 4 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-770.
Summary
VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
Red Hat 4 advisories
- RHSA-2018:3062 Released 2018-10-30 · Red Hat rating Lowqemu-kvm-ma security, bug fix, and enhancement update
- Red Hat Enterprise Linux Server (v. 7) qemu-img-ma-10:2.12.0-18.el7, qemu-kvm-common-ma-10:2.12.0-18.el7, qemu-kvm-ma-10:2.12.0-18.el7 +1
- Red Hat Enterprise Linux Server Optional (v. 7) qemu-kvm-common-ma-10:2.12.0-18.el7, qemu-kvm-ma-10:2.12.0-18.el7, qemu-kvm-tools-ma-10:2.12.0-18.el7
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) qemu-img-ma-10:2.12.0-18.el7, qemu-kvm-common-ma-10:2.12.0-18.el7, qemu-kvm-ma-10:2.12.0-18.el7 +1
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) qemu-img-ma-10:2.12.0-18.el7, qemu-kvm-common-ma-10:2.12.0-18.el7, qemu-kvm-ma-10:2.12.0-18.el7 +1
- RHSA-2018:1113 Released 2018-04-11 · Red Hat rating Moderateqemu-kvm-rhev security and bug fix update
- Red Hat OpenStack Platform 10.0 qemu-img-rhev-10:2.10.0-21.el7, qemu-kvm-common-rhev-10:2.10.0-21.el7, qemu-kvm-rhev-10:2.10.0-21.el7 +1
- Red Hat OpenStack Platform 11.0 qemu-img-rhev-10:2.10.0-21.el7, qemu-kvm-common-rhev-10:2.10.0-21.el7, qemu-kvm-rhev-10:2.10.0-21.el7 +1
- Red Hat OpenStack Platform 12.0 qemu-img-rhev-10:2.10.0-21.el7, qemu-kvm-common-rhev-10:2.10.0-21.el7, qemu-kvm-rhev-10:2.10.0-21.el7 +1
- Red Hat OpenStack Platform 8.0 (Liberty) qemu-img-rhev-10:2.10.0-21.el7, qemu-kvm-common-rhev-10:2.10.0-21.el7, qemu-kvm-rhev-10:2.10.0-21.el7 +1
- Red Hat OpenStack Platform 9.0 qemu-img-rhev-10:2.10.0-21.el7, qemu-kvm-common-rhev-10:2.10.0-21.el7, qemu-kvm-rhev-10:2.10.0-21.el7 +1
- RHSA-2018:1104 Released 2018-04-10 · Red Hat rating Importantqemu-kvm-rhev security, bug fix, and enhancement update
- Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts qemu-img-rhev-10:2.10.0-21.el7, qemu-kvm-common-rhev-10:2.10.0-21.el7, qemu-kvm-rhev-10:2.10.0-21.el7 +1
Show 1 more Red Hat advisories
- RHSA-2018:0816 Released 2018-04-10 · Red Hat rating Lowqemu-kvm security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) qemu-img-10:1.5.3-156.el7, qemu-kvm-10:1.5.3-156.el7, qemu-kvm-common-10:1.5.3-156.el7 +1
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) qemu-img-10:1.5.3-156.el7, qemu-kvm-10:1.5.3-156.el7, qemu-kvm-common-10:1.5.3-156.el7 +1
- Red Hat Enterprise Linux Server (v. 7) qemu-img-10:1.5.3-156.el7, qemu-kvm-10:1.5.3-156.el7, qemu-kvm-common-10:1.5.3-156.el7 +1
- Red Hat Enterprise Linux Workstation (v. 7) qemu-img-10:1.5.3-156.el7, qemu-kvm-10:1.5.3-156.el7, qemu-kvm-common-10:1.5.3-156.el7 +1
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix yet |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2018:0816 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2018:0816 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:0816, RHSA-2018:3062 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2018:3062 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:0816 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:3062 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2018:3062 |
| Red Hat OpenStack Platform 10.0 | Fixed | RHSA-2018:1113 |
| Red Hat OpenStack Platform 11.0 | Fixed | RHSA-2018:1113 |
| Red Hat OpenStack Platform 12.0 | Fixed | RHSA-2018:1113 |
| Red Hat OpenStack Platform 8.0 (Liberty) | Fixed | RHSA-2018:1113 |
| Red Hat OpenStack Platform 9.0 | Fixed | RHSA-2018:1113 |
| Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts | Fixed | RHSA-2018:1104 |
Timeline
- 2026-10-02 Threatist record created from CVE-2017-15124
- 2026-10-03 Alias added: GHSA-7hxc-fq33-47vp
References
More Qemu vulnerabilities
- TI-2024-16148 QEMU before 8.2.0 has an integer underflow, and resultant buffer overflow, via a TI… CVSS 3.1HIGH 8.8
- TI-2022-02736 Uncontrolled resource consumption in QEMU CVSS 3.1HIGH 7.8
- TI-2023-02681 Qemu: 9pfs: improper access control on special files CVSS 3.1HIGH 7.1
- TI-2019-09678 The QMP migrate command in QEMU version 4.0.0 and earlier is vulnerable to OS command… CVSS 3.0CRITICAL 9.8
- TI-2024-03326 Qemu-kvm: net: assertion failure in update_sctp_checksum() CVSS 3.1MEDIUM 5.5
- TI-2023-22631 QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2017-15124 · CVE Program
- CVE-2017-15124 · NVD
- FIRST EPSS
- GHSA-7hxc-fq33-47vp · GitHub Advisory Database · CC BY 4.0
- CVE-2017-15124 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences