X.org libXfixes integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in X.org libXfixes. Affected is an unknown function. The manipulation leads to integer overflow. This vulnerability is referenced as CVE-2016-7944. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in X.org libXfixes (affected version not known). It has been rated as very critical. This issue affects some unknown functionality. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which triggers the client to stop reading data and get out of sync.

The weakness was published 10/05/2016 by Tobias Stoeckmann with OpenBSD (Website). The advisory is shared at openwall.com. The public release has been coordinated with X.org. The identification of this vulnerability is CVE-2016-7944 since 09/09/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/22/2022).

The vulnerability scanner Nessus provides a plugin with the ID 900046 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169243 (SUSE Enterprise Linux Security Update for X Window System client libraries (SUSE-SU-2016:2505-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (900046), SecurityFocus (BID 93361†) and SecurityTracker (ID 1036945†). Similar entries are available at VDB-92463, VDB-92464, VDB-92466 and VDB-92467. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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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: 🔍

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Nessus ID: 900046
Nessus File: 🔍

OpenVAS ID: 61877
OpenVAS Name: Fedora Update for libXfixes FEDORA-2016-ff5a2f4839
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: cgit.freedesktop.org

Timelineinfo

09/09/2016 🔍
10/04/2016 +25 days 🔍
10/05/2016 +1 days 🔍
10/05/2016 +0 days 🔍
10/05/2016 +0 days 🔍
10/06/2016 +1 days 🔍
12/13/2016 +68 days 🔍
09/22/2022 +2109 days 🔍

Sourcesinfo

Vendor: x.org

Advisory: FEDORA-2016-72d7f05b90
Researcher: Tobias Stoeckmann
Organization: OpenBSD
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-7944 (🔍)
GCVE (CVE): GCVE-0-2016-7944
GCVE (VulDB): GCVE-100-92465
SecurityFocus: 93361 - X.Org libXfixes CVE-2016-7944 Integer Overflow Vulnerability
SecurityTracker: 1036945

See also: 🔍

Entryinfo

Created: 10/06/2016 21:12
Updated: 09/22/2022 14:29
Changes: 10/06/2016 21:12 (65), 05/03/2019 22:35 (12), 09/22/2022 14:29 (4)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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