CVE-2014-6053

Home/CVE/The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not proper

CVE

The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not proper

The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.

MEDIUM · CVSS 5 EPSS 0.36865

Schedule remediation

EPSS ≥ 0.10 - elevated exploitation probability
EPSS percentile: top 3% of all CVEs by exploitation likelihood

Sigma rules0 YARA rules0

▤

Affected Products & Versions

libvncserver<= 0.9.9
canonical ubuntu linuxall versions
debian linuxall versions

▣

Scoring & Timeline

MEDIUM · CVSS v2 (legacy) · cve@mitre.org

View on NVD

This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.

v2 Vector

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

Published to NVD15 Dec 2014 · 06:59 PM

⚑

Vendor Advisories

usnUSN-4587-1
usnUSN-4573-1
suse-csafSUSE-SU-2015:2088-1
suse-csafSUSE-SU-2015:2088-2
suse-csafSUSE-SU-2015:2110-1
Show all 8 vendor advisoriesusnUSN-2365-1
rhsaRHSA-2014:1826Moderate
rhsaRHSA-2014:1827Moderate

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html

http://seclists.org/oss-sec/2014/q3/639Mailing ListThird Party Advisory

http://secunia.com/advisories/61506

http://secunia.com/advisories/61682

http://ubuntu.com/usn/usn-2365-1Third Party Advisory

http://www.debian.org/security/2014/dsa-3081Third Party Advisory

Show all 15 references

http://www.ocert.org/advisories/ocert-2014-007.htmlThird Party AdvisoryUS Government Resource

http://www.openwall.com/lists/oss-security/2014/09/25/11Mailing ListThird Party Advisory

https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28Issue TrackingPatch

https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html

https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html

https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html

https://security.gentoo.org/glsa/201507-07

https://usn.ubuntu.com/4573-1/

https://usn.ubuntu.com/4587-1/

Intelligence Graph · click any node to traverse

CVETechnique ActorTool Family

drag to reposition · click any node to traverse · button top-right enlarges

External lookups - second-class, for what we don’t hold ourselves

NVD CVE.org CISA Vulners Exploit-DB GitHub PoC VulnCheck KEV GreyNoise

Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities

Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs

Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures

Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1

About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service

threatengine.sh · Open-source threat intelligence platform · 100+ authoritative sources · Every fact traces to its origin