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TI-2014-04997 Aliases CVE-2014-6051GHSA-6457-9pfw-39g2

Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9…

Priority MEDIUM 44CWE-189Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-189 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.08272 94th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

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 · 7

CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:*:*:*:*:*:*:*6.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:6.5.z:*:*:*:*:*:*:*6.5.zVulnerableRed Hat
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*20VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*21VulnerableFedoraproject
cpe:2.3:a:libvncserver:libvncserver:*:*:*:*:*:*:*:*up to 0.9.9VulnerableLibvncserver
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*11.3VulnerableOracle
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:*:*:*:*:*:*:* Versions 6.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:6.5.z:*:*:*:*:*:*:* Versions 6.5.z Vulnerable ·Red Hat
  • cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:* Versions 20 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:* Versions 21 Vulnerable ·Fedoraproject
  • cpe:2.3:a:libvncserver:libvncserver:*:*:*:*:*:*:*:* Versions up to 0.9.9 Vulnerable ·Libvncserver
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:* Versions 11.3 Vulnerable ·Oracle

Remediation

Red Hat 2 advisories

  • RHSA-2015:0113 Released 2015-02-02 · Red Hat rating Moderate
    libvncserver security update
    • Red Hat Enterprise Linux Server EUS (v. 6.5) libvncserver-0.9.7-7.el6_5.1
    • Red Hat Enterprise Linux Server Optional EUS (v. 6.5) libvncserver-0.9.7-7.el6_5.1, libvncserver-0.9.7-7.el6_5.1.ppc, libvncserver-devel-0.9.7-7.el6_5.1 +1
  • RHSA-2014:1826 Released 2014-11-11 · Red Hat rating Moderate
    libvncserver security update
    • Red Hat Enterprise Linux Client (v. 7) libvncserver-0.9.9-9.el7_0.1
    • Red Hat Enterprise Linux Client Optional (v. 7) libvncserver-devel-0.9.9-9.el7_0.1
    • Red Hat Enterprise Linux Desktop (v. 6) libvncserver-0.9.7-7.el6_6.1
    • Red Hat Enterprise Linux Desktop Optional (v. 6) libvncserver-0.9.7-7.el6_6.1, libvncserver-devel-0.9.7-7.el6_6.1
    • Red Hat Enterprise Linux Server (v. 6) libvncserver-0.9.7-7.el6_6.1
    • Red Hat Enterprise Linux Server (v. 7) libvncserver-0.9.9-9.el7_0.1
    • Red Hat Enterprise Linux Server Optional (v. 6) libvncserver-0.9.7-7.el6_6.1, libvncserver-0.9.7-7.el6_6.1.ppc, libvncserver-devel-0.9.7-7.el6_6.1 +1
    • Red Hat Enterprise Linux Server Optional (v. 7) libvncserver-devel-0.9.9-9.el7_0.1
    • Red Hat Enterprise Linux Workstation (v. 6) libvncserver-0.9.7-7.el6_6.1
    • Red Hat Enterprise Linux Workstation (v. 7) libvncserver-0.9.9-9.el7_0.1
    • Red Hat Enterprise Linux Workstation Optional (v. 6) libvncserver-0.9.7-7.el6_6.1, libvncserver-devel-0.9.7-7.el6_6.1
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libvncserver-devel-0.9.9-9.el7_0.1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Server EUS (v. 6.5)Fixed RHSA-2015:0113
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Server Optional EUS (v. 6.5)Fixed RHSA-2015:0113
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2014:1826
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2014:1826
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2014-6051
  2. 2026-10-03 Alias added: GHSA-6457-9pfw-39g2

References

Patch 2

Advisory 12

Other 1

Sources

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