Vulnerability Monitor

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CVE-2014-6051

Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9 and earlier allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via an advertisement for a large screen size, which triggers a heap-based buffer overflow.

Security Impact Summary

CVE-2014-6051 is a security vulnerability that . Impacting 6 products from redhat, from redhat, from fedoraproject and 3 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2014, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2014-09-30T16:55:07.010

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.5 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-189

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	redhat	enterprise_linux_server_aus	6.5	Yes
Operating System	redhat	enterprise_linux_server_eus	6.5.z	Yes
Operating System	fedoraproject	fedora	20	Yes
Operating System	fedoraproject	fedora	21	Yes
Application	libvncserver	libvncserver	≤ 0.9.9	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	oracle	solaris	11.3	Yes

References

http://lists.fedoraproject.org/pipermail/package-announce/2014-October/139654.html Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2014-September/139445.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-0113.html Third Party Advisory ([email protected])
http://seclists.org/oss-sec/2014/q3/639 Third Party Advisory ([email protected])
http://secunia.com/advisories/61506 Permissions Required, Third Party Advisory ([email protected])
http://www.debian.org/security/2014/dsa-3081 Third Party Advisory ([email protected])
http://www.ocert.org/advisories/ocert-2014-007.html Patch, Third Party Advisory, US Government Resource ([email protected])
http://www.openwall.com/lists/oss-security/2014/09/25/11 Third Party Advisory ([email protected])
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/70093 ([email protected])
https://github.com/newsoft/libvncserver/commit/045a044e8ae79db9244593fbce154cdf6e843273 Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html ([email protected])
https://security.gentoo.org/glsa/201507-07 ([email protected])
https://security.gentoo.org/glsa/201612-36 ([email protected])
https://usn.ubuntu.com/4587-1/ ([email protected])
https://www.kde.org/info/security/advisory-20140923-1.txt Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/139654.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2014-September/139445.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-0113.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/oss-sec/2014/q3/639 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/61506 Permissions Required, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2014/dsa-3081 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.ocert.org/advisories/ocert-2014-007.html Patch, Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2014/09/25/11 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/70093 (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/newsoft/libvncserver/commit/045a044e8ae79db9244593fbce154cdf6e843273 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201507-07 (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201612-36 (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4587-1/ (af854a3a-2127-422b-91ae-364da2661108)
https://www.kde.org/info/security/advisory-20140923-1.txt Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For redhat's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.