VDB-92473 · CVE-2016-7952 · BID 93375

X.org XRecord input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

A vulnerability was found in X.org XRecord (the affected version unknown). It has been declared as critical. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. The summary by CVE is:

X.org libXtst before 1.2.3 allows remote X servers to cause a denial of service (infinite loop) via a reply in the (1) XRecordStartOfData, (2) XRecordEndOfData, or (3) XRecordClientDied category without a client sequence and with attached data.

The weakness was presented 10/05/2016 by Tobias Stoeckmann with OpenBSD (Website). The advisory is shared at openwall.com. The public release was coordinated in cooperation with X.org. This vulnerability is known as CVE-2016-7952 since 09/09/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 900049 , 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 vulnerability database at Tenable (900049). See 92463, 92464, 92465 and 92466 for similar entries.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 900049
Nessus File: 🔍

OpenVAS ID: 855131
OpenVAS Name: Fedora Update for libXtst FEDORA-2016-b26b497381
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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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-c1d4b1df79
Researcher: Tobias Stoeckmann
Organization: OpenBSD
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-7952 (🔍)
SecurityTracker: 1036945
SecurityFocus: 93375 - X.Org libXtst CVE-2016-7952 Multiple Unspecified Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 10/06/2016 21:12
Updated: 09/22/2022 14:47
Changes: 10/06/2016 21:12 (65), 05/03/2019 23:37 (12), 09/22/2022 14:47 (5)
Complete: 🔍

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