virglrenderer up to 0.6.0 vrend_renderer.c util_format_is_pure_uint null pointer dereference

CVSS Meta Temp Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in virglrenderer up to 0.6.0. Affected is the function util_format_is_pure_uint of the file vrend_renderer.c. Executing a manipulation can lead to null pointer dereference. This vulnerability is tracked as CVE-2017-5937. The attack is restricted to local execution. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in virglrenderer up to 0.6.0. It has been declared as problematic. This vulnerability affects the function util_format_is_pure_uint 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 util_format_is_pure_uint function in vrend_renderer.c in Virgil 3d project (aka virglrenderer) 0.6.0 and earlier allows local guest OS users to cause a denial of service (NULL pointer dereference) via a crafted VIRGL_CCMD_CLEAR command.

The bug was discovered 03/15/2017. The weakness was disclosed 03/15/2017 by Li Qiang with 360.cn Inc. (oss-sec). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2017-5937 since 02/08/2017. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 97913 (SUSE SLED12 / SLES12 Security Update : virglrenderer (SUSE-SU-2017:0798-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169822 (SUSE Enterprise Linux Security Update for virglrenderer (SUSE-SU-2017:0798-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97913) and SecurityFocus (BID 96180†). The entries VDB-97793, VDB-97950, VDB-98124 and VDB-98149 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97913
Nessus Name: SUSE SLED12 / SLES12 Security Update : virglrenderer (SUSE-SU-2017:0798-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

02/08/2017 🔍
02/08/2017 +0 days 🔍
03/15/2017 +35 days 🔍
03/15/2017 +0 days 🔍
03/15/2017 +0 days 🔍
03/16/2017 +1 days 🔍
03/22/2017 +6 days 🔍
03/23/2017 +1 days 🔍
09/08/2020 +1265 days 🔍

Sourcesinfo

Advisory: openwall.com
Researcher: Li Qiang
Organization: 360.cn Inc.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-5937 (🔍)
GCVE (CVE): GCVE-0-2017-5937
GCVE (VulDB): GCVE-100-98152
SecurityFocus: 96180 - QEMU CVE-2017-5937 Denial of Service Vulnerability
OSVDB: - CVE-2017-5937 - virglrenderer - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 03/16/2017 13:38
Updated: 09/08/2020 16:16
Changes: 03/16/2017 13:38 (74), 09/08/2020 16:16 (4)
Complete: 🔍
Cache ID: 216:0AB:103

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