CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability was found in X Server (the affected version unknown). It has been classified as problematic. This affects an unknown part. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on availability. The summary by CVE is:

Integer underflow in the xTrapezoidValid macro in render/picture.h in X.Org allows context-dependent attackers to cause a denial of service (crash) via a negative bottom value.

The weakness was released 01/18/2014 (Website). It is possible to read the advisory at This vulnerability is uniquely identified as CVE-2013-6424 since 11/04/2013. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 71631 (Scientific Linux Security Update : xorg-x11-server on SL5.x, SL6.x i386/x86_64), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Scientific Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196001 (Ubuntu Security Notification for Xorg-server, Xorg-server-lts-trusty, Xorg-server-lts-utopic Vulnerabilities (USN-2500-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (89487), Tenable (71631), SecurityFocus (BID 64127†) and Vulnerability Center (SBV-42765†). Entry connected to this vulnerability is available at VDB-68379.



CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


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: 🔍



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

NVD Base Score: 🔍


Class: Numeric error
CWE: CWE-189

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 71631
Nessus Name: Scientific Linux Security Update : xorg-x11-server on SL5.x, SL6.x i386/x86_64
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 702822
OpenVAS Name: Debian Security Advisory DSA 2822-1 (xorg-server - integer underflow
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


11/04/2013 🔍
12/05/2013 +31 days 🔍
12/24/2013 +19 days 🔍
01/01/2014 +8 days 🔍
01/18/2014 +17 days 🔍
01/18/2014 +0 days 🔍
03/24/2015 +430 days 🔍
01/31/2022 +2505 days 🔍


Advisory: USN-2500-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-6424 (🔍)

X-Force: 89487
Vulnerability Center: 42765 - X.Org X Server 1.x Remote Code Execution Vulnerability via a Crafted File, Medium
SecurityFocus: 64127

See also: 🔍


Created: 03/24/2015 03:54 PM
Updated: 01/31/2022 11:13 AM
Changes: 03/24/2015 03:54 PM (63), 05/18/2017 05:50 PM (3), 01/31/2022 11:00 AM (3), 01/31/2022 11:05 AM (1), 01/31/2022 11:13 AM (1)
Complete: 🔍
Cache ID: 44:DBB:40


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