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TI-2015-01597 Aliases CVE-2015-1779GHSA-cmjj-4jjr-c8vv

The VNC websocket frame decoder in QEMU allows remote attackers to cause a denial of…

Priority MEDIUM 47CWE-400Published · Updated

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: 8 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-400.

Summary

The VNC websocket frame decoder in QEMU allows remote attackers to cause a denial of service (memory and CPU consumption) via a large (1) websocket payload or (2) HTTP headers section.

Why it matters now

EPSS 0.06571 93rd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 8 fixed, 2 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 30

CPEVersionsRoleVendor
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*up to 2.2.1VulnerableQEMU
cpe:2.3:a:qemu:qemu:2.3.0:rc0:*:*:*:*:*:*2.3.0 rc0VulnerableQEMU
cpe:2.3:a:qemu:qemu:2.3.0:rc1:*:*:*:*:*:*2.3.0 rc1VulnerableQEMU
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*14.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*15.04VulnerableCanonical
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*21VulnerableFedoraproject
  • cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* Versions up to 2.2.1 Vulnerable ·QEMU
  • cpe:2.3:a:qemu:qemu:2.3.0:rc0:*:*:*:*:*:* Versions 2.3.0 rc0 Vulnerable ·QEMU
  • cpe:2.3:a:qemu:qemu:2.3.0:rc1:*:*:*:*:*:* Versions 2.3.0 rc1 Vulnerable ·QEMU
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:* Versions 14.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* Versions 15.04 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:* Versions 21 Vulnerable ·Fedoraproject
Show 20 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*22VulnerableFedoraproject
cpe:2.3:o:redhat:enterprise_linux_eus:7.1:*:*:*:*:*:*:*7.1VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.2:*:*:*:*:*:*:*7.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:*7.7VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*7.7VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*7.7VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:a:redhat:virtualization:3.0:*:*:*:*:*:*:*3.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0Running onRed Hat
cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*7VulnerableOracle
  • cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Versions 22 Vulnerable ·Fedoraproject
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.1:*:*:*:*:*:*:* Versions 7.1 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:* Versions 7.7 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:* Versions 7.7 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:* Versions 7.7 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:virtualization:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Running on ·Red Hat
  • cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:* Versions 7 Vulnerable ·Oracle

Remediation

Red Hat 2 advisories

  • RHSA-2015:1943 Released 2015-10-27 · Red Hat rating Moderate
    qemu-kvm security update
    • Red Hat Enterprise Linux Client (v. 7) libcacard-10:1.5.3-86.el7_1.8, qemu-img-10:1.5.3-86.el7_1.8, qemu-kvm-10:1.5.3-86.el7_1.8 +2
    • Red Hat Enterprise Linux Client Optional (v. 7) libcacard-devel-10:1.5.3-86.el7_1.8, libcacard-tools-10:1.5.3-86.el7_1.8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) libcacard-10:1.5.3-86.el7_1.8, libcacard-devel-10:1.5.3-86.el7_1.8, libcacard-tools-10:1.5.3-86.el7_1.8 +4
    • Red Hat Enterprise Linux Server (v. 7) libcacard-10:1.5.3-86.el7_1.8, qemu-img-10:1.5.3-86.el7_1.8, qemu-kvm-10:1.5.3-86.el7_1.8 +2
    • Red Hat Enterprise Linux Server Optional (v. 7) libcacard-10:1.5.3-86.el7_1.8, libcacard-10:1.5.3-86.el7_1.8.ppc, libcacard-devel-10:1.5.3-86.el7_1.8 +2
    • Red Hat Enterprise Linux Workstation (v. 7) libcacard-10:1.5.3-86.el7_1.8, qemu-img-10:1.5.3-86.el7_1.8, qemu-kvm-10:1.5.3-86.el7_1.8 +2
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libcacard-devel-10:1.5.3-86.el7_1.8, libcacard-tools-10:1.5.3-86.el7_1.8
  • RHSA-2015:1931 Released 2015-10-26 · Red Hat rating Moderate
    qemu-kvm-rhev security update
    • RHEV-H and VDSM for 7 Hosts libcacard-devel-rhev-10:2.1.2-23.el7_1.10, libcacard-rhev-10:2.1.2-23.el7_1.10, libcacard-tools-rhev-10:2.1.2-23.el7_1.10 +4

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)AffectedNo fix yet
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)AffectedNo fix yet
RHEV-H and VDSM for 7 HostsFixed RHSA-2015:1931
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2015:1943
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2015:1943
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2015:1943
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2015:1943
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2015:1943
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2015:1943
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2015:1943
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat OpenStack Platform 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2015-1779
  2. 2026-10-03 Alias added: GHSA-cmjj-4jjr-c8vv

References

Patch 2

Advisory 13

Sources

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