Home/CVE/The VNC websocket frame decoder in QEMU allows remote attackers to cause a denial of service (memory and CPU consumption
CVE

CVE-2015-1779

The VNC websocket frame decoder in QEMU allows remote attackers to cause a denial of service (memory and CPU consumption

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.

HIGH · CVSS 8.6 EPSS 0.05573
Schedule remediation
  • EPSS percentile: top 10% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules10 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

12
qemu<= 2.2.1
qemuall versions
canonical ubuntu linuxall versions
debian linuxall versions
fedoraproject fedoraall versions
redhat enterprise linux eusall versions
redhat enterprise linux serverall versions
redhat enterprise linux server ausall versions
◈

Sigma Hunt Rules

10
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPowershell Detect Virtualization Environment
productcriticalLinux Reverse Shell Indicator
producthighCommunication To LocaltoNet Tunneling Service Initiated - Linux
producthighPotentially Suspicious Malware Callback Communication - Linux
producthighLinux Crypto Mining Pool Connections
producthighCommunication To Ngrok Tunneling Service - Linux
▣

Scoring & Timeline

8.6
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Jan 2016 · 07:59 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
⚑

Vendor Advisories

13
suse-csafopenSUSE-SU-2024:10196-1
suse-csafSUSE-SU-2021:14706-1
suse-csafSUSE-SU-2021:14704-1
suse-csafSUSE-SU-2016:1318-1
suse-csafSUSE-SU-2016:0955-1
🔗

References & Sources

17
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154656.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155196.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00033.htmlBroken Link
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00042.htmlBroken Link
http://rhn.redhat.com/errata/RHSA-2015-1931.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-1943.htmlThird Party Advisory
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