virglrenderer up to 0.5.x vrend_renderer.c dispatch null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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3.2$0-$5k0.00

A vulnerability classified as problematic was found in virglrenderer up to 0.5.x. This vulnerability affects the function dispatch of the file vrend_renderer.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

The vrend_clear dispatch function in vrend_renderer.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (NULL pointer dereference) via a crafted value in "buffers."

The weakness was presented 05/26/2017 (Website). The advisory is available at lists.freedesktop.org. This vulnerability was named CVE-2017-9021 since 05/16/2017. Local access is required to approach this attack. A single authentication is necessary for exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 0.6.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cgit.freedesktop.org. The best possible mitigation is suggested to be patching the affected component.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Upgrade: virglrenderer 0.6.0
Patch: cgit.freedesktop.org

Timelineinfo

05/16/2017 🔍
05/26/2017 +10 days 🔍
05/26/2017 +0 days 🔍
05/27/2017 +1 days 🔍
10/03/2020 +1225 days 🔍

Sourcesinfo

Advisory: lists.freedesktop.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-9021 (🔍)

Entryinfo

Created: 05/27/2017 09:51
Updated: 10/03/2020 17:01
Changes: 05/27/2017 09:51 (40), 10/03/2020 17:01 (4)
Complete: 🔍

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