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6.0	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in XFree86 and X11. This affects the function __glXSeparableFilter2DReqSize of the component GLX Extension. Executing a manipulation can lead to integer overflow. The identification of this vulnerability is CVE-2014-8093. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in XFree86 and X11 (Windowing System Software) and classified as critical. This vulnerability affects the function __glXSeparableFilter2DReqSize of the component GLX Extension. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Multiple integer overflows in the GLX extension in XFree86 4.0, X.Org X Window System (aka X11 or X) X11R6.7, and X.Org Server (aka xserver and xorg-server) before 1.16.3 allow remote authenticated users to cause a denial of service (crash) or possibly execute arbitrary code via a crafted request to the (1) __glXDisp_ReadPixels, (2) __glXDispSwap_ReadPixels, (3) __glXDisp_GetTexImage, (4) __glXDispSwap_GetTexImage, (5) GetSeparableFilter, (6) GetConvolutionFilter, (7) GetHistogram, (8) GetMinmax, (9) GetColorTable, (10) __glXGetAnswerBuffer, (11) __GLX_GET_ANSWER_BUFFER, (12) __glXMap1dReqSize, (13) __glXMap1fReqSize, (14) Map2Size, (15) __glXMap2dReqSize, (16) __glXMap2fReqSize, (17) __glXImageSize, or (18) __glXSeparableFilter2DReqSize function, which triggers an out-of-bounds read or write.

The weakness was shared 12/10/2014 by Ilja van Sprundel (Website). The advisory is available at x.org. This vulnerability was named CVE-2014-8093 since 10/10/2014. The exploitation appears to be easy. The attack can be initiated remotely. A single authentication is necessary for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 79958 (FreeBSD : NVIDIA UNIX driver -- remote denial of service or arbitrary code execution (fdf72a0e-8371-11e4-bc20-001636d274f3)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350232 (Amazon Linux Security Advisory for xorg-x11-server: ALAS-2015-470).

Upgrading to version 1.16.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (99219), Tenable (79958), SecurityFocus (BID 71596†), Secunia (SA62292†) and Vulnerability Center (SBV-51360†). The entries VDB-68379, VDB-68380, VDB-68412 and VDB-73184 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Windowing System Software

Name

• X11
• XFree86

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 79958
Nessus Name: FreeBSD : NVIDIA UNIX driver -- remote denial of service or arbitrary code execution (fdf72a0e-8371-11e4-bc20-001636d274f3)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703095
OpenVAS Name: Debian Security Advisory DSA 3095-1 (xorg-server - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: XFree86/X11 1.16.2

Timelineinfo

10/10/2014 🔍
12/10/2014 +61 days 🔍
12/10/2014 +0 days 🔍
12/10/2014 +0 days 🔍
12/15/2014 +5 days 🔍
03/27/2015 +102 days 🔍
07/14/2015 +109 days 🔍
07/16/2015 +2 days 🔍
08/29/2025 +3697 days 🔍

Sourcesinfo

Advisory: x.org
Researcher: Ilja van Sprundel
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-8093 (🔍)
GCVE (CVE): GCVE-0-2014-8093
GCVE (VulDB): GCVE-100-73174

OVAL: 🔍

X-Force: 99219
SecurityFocus: 71596 - X.Org X Server CVE-2014-8093 Multiple Integer Overflow Vulnerabilities
Secunia: 62292
Vulnerability Center: 51360 - XFree86, X.Org X Window System and X.Org Server Remote DoS and Code Execution via a Crafted Request - CVE-2014-8093, Medium

See also: 🔍

Entryinfo

Created: 03/27/2015 14:56
Updated: 08/29/2025 15:49
Changes: 03/27/2015 14:56 (69), 07/13/2017 10:40 (7), 04/07/2022 14:57 (3), 08/29/2025 15:49 (17)
Complete: 🔍
Cache ID: 216:0A3:103

Discussion

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