libvncserver 0.9.9 rfbProcessClientNormalMessage numeric error

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in libvncserver 0.9.9. Affected by this issue is the function rfbProcessClientNormalMessage. Executing a manipulation can lead to numeric error. This vulnerability is tracked as CVE-2014-6054. No exploit exists.

Detailsinfo

A vulnerability has been found in libvncserver 0.9.9 and classified as problematic. This vulnerability affects the function rfbProcessClientNormalMessage. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect availability. CVE summarizes:

The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier allows remote attackers to cause a denial of service (divide-by-zero error and server crash) via a zero value in the scaling factor in a (1) PalmVNCSetScaleFactor or (2) SetScale message.

The weakness was disclosed 10/06/2014 by Nicolas Ruff as confirmed advisory (CERT.org). The advisory is available at ocert.org. This vulnerability was named CVE-2014-6054 since 09/01/2014. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 79188 (CentOS 6 / 7 : libvncserver (CESA-2014:1826)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168339 (SUSE Enterprise Linux Security update for LibVNCServer (SUSE-SU-2015:2088-2)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 16879.

The vulnerability is also documented in the databases at X-Force (96189), Tenable (79188), SecurityFocus (BID 70094†), Secunia (SA61506†) and Vulnerability Center (SBV-47116†). The entries VDB-71696, VDB-71695, VDB-73231 and VDB-73230 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 79188
Nessus Name: CentOS 6 / 7 : libvncserver (CESA-2014:1826)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703081
OpenVAS Name: Debian Security Advisory DSA 3081-1 (libvncserver - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com
TippingPoint: 🔍
ISS Proventia IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

09/01/2014 🔍
09/23/2014 +22 days 🔍
09/23/2014 +0 days 🔍
10/01/2014 +8 days 🔍
10/06/2014 +5 days 🔍
10/06/2014 +0 days 🔍
11/18/2014 +43 days 🔍
03/26/2015 +128 days 🔍
03/29/2022 +2560 days 🔍

Sourcesinfo

Advisory: RHSA-2014:1826
Researcher: Nicolas Ruff
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-6054 (🔍)
GCVE (CVE): GCVE-0-2014-6054
GCVE (VulDB): GCVE-100-71842

OVAL: 🔍

X-Force: 96189
SecurityFocus: 70094 - LibVNCServer CVE-2014-6054 Denial of Service Vulnerability
Secunia: 61506 - LibVNCServer Multiple Vulnerabilities, Moderately Critical
Vulnerability Center: 47116 - LibVNCServer 0.9.9 and Prior Remote DoS Vulnerability via a Zero Value in the Scaling Factor, Medium

See also: 🔍

Entryinfo

Created: 03/26/2015 16:14
Updated: 03/29/2022 19:59
Changes: 03/26/2015 16:14 (70), 06/12/2017 08:23 (8), 03/29/2022 19:51 (4), 03/29/2022 19:59 (2)
Complete: 🔍
Cache ID: 216:7FA:103

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