CVE-2015-1779

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Summary

CVECVE-2015-1779
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-01-12 19:59:00 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 8.6 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Problem Types: CWE-400 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
2.0[email protected]Primary7.8AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:L/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 12.04 All All All
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Canonical Ubuntu Linux 14.10 All All All
Operating System Canonical Ubuntu Linux 15.04 All All All
Operating System Debian Debian Linux 7.0 All All All
Operating System Debian Debian Linux 8.0 All All All
Operating System Fedoraproject Fedora 21 All All All
Operating System Fedoraproject Fedora 22 All All All
Operating System Oracle Linux 7 - All All
Application Qemu Qemu 2.3.0 rc0 All All
Application Qemu Qemu 2.3.0 rc1 All All
Application Qemu Qemu All All All All
Operating System Redhat Enterprise Linux 7.0 All All All
Operating System Redhat Enterprise Linux Eus 7.1 All All All
Operating System Redhat Enterprise Linux Eus 7.2 All All All
Operating System Redhat Enterprise Linux Eus 7.3 All All All
Operating System Redhat Enterprise Linux Eus 7.4 All All All
Operating System Redhat Enterprise Linux Eus 7.5 All All All
Operating System Redhat Enterprise Linux Eus 7.6 All All All
Operating System Redhat Enterprise Linux Eus 7.7 All All All
Operating System Redhat Enterprise Linux Server 7.0 All All All
Operating System Redhat Enterprise Linux Server Aus 7.3 All All All
Operating System Redhat Enterprise Linux Server Aus 7.4 All All All
Operating System Redhat Enterprise Linux Server Aus 7.6 All All All
Operating System Redhat Enterprise Linux Server Aus 7.7 All All All
Operating System Redhat Enterprise Linux Server Tus 7.3 All All All
Operating System Redhat Enterprise Linux Server Tus 7.6 All All All
Operating System Redhat Enterprise Linux Server Tus 7.7 All All All
Operating System Redhat Enterprise Linux Workstation 7.0 All All All
Application Redhat Virtualization 3.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
oss-security - CVE-2015-1779 qemu: vnc: insufficient resource limiting in VNC websockets decoder af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
QEMU VNC Websockets Decoder Lets Remote Users on the Local Network Consume Excessive Memory and CPU Resources - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
Debian -- Security Information -- DSA-3259-1 qemu af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
[Qemu-devel] [PATCH 1/2] CVE-2015-1779: incrementally decode websocket f af854a3a-2127-422b-91ae-364da2661108 lists.gnu.org Mailing List, Patch, Third Party Advisory
oss-security - Re: CVE-2015-1779 qemu: vnc: insufficient resource limiting in VNC websockets decoder af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
Object not found! af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Broken Link
[SECURITY] Fedora 22 Update: qemu-2.3.0-0.3.rc2.fc22 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Third Party Advisory
[SECURITY] Fedora 21 Update: qemu-2.1.3-5.fc21 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Third Party Advisory
USN-2608-1: QEMU vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
QEMU CVE-2015-1779 Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Object not found! af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Broken Link
[Qemu-devel] [PATCH 2/2] CVE-2015-1779: limit size of HTTP headers from af854a3a-2127-422b-91ae-364da2661108 lists.gnu.org Mailing List, Patch, Third Party Advisory
Oracle Linux Bulletin - October 2015 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
QEMU: Multiple vulnerabilities (GLSA 201602-01) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
[Qemu-devel] [PATCH 0/2] CVE-2015-1779: fix denial of service in VNC web af854a3a-2127-422b-91ae-364da2661108 lists.gnu.org Mailing List, Third Party Advisory
Red Hat Customer Portal MITRE access.redhat.com
Red Hat Customer Portal MITRE access.redhat.com
access.redhat.com | CVE-2015-1779 MITRE access.redhat.com
1199572 – (CVE-2015-1779) CVE-2015-1779 qemu: vnc: insufficient resource limiting in VNC websockets decoder MITRE bugzilla.redhat.com
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