virglrenderer up to 0.5.x vrend_draw_vbo vertext_buffer_index out-of-bounds
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.5 | $0-$5k | 0.00 |
A vulnerability was found in virglrenderer up to 0.5.x. It has been rated as problematic. This issue affects the function vrend_draw_vbo
. The manipulation of the argument vertext_buffer_index
with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability. The summary by CVE is:
The vrend_draw_vbo function in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors involving vertext_buffer_index.
The bug was discovered 02/24/2017. The weakness was published 03/20/2017 by Li Qiang with 360.cn Inc. (oss-sec). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2017-5956 since 02/10/2017. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.
The vulnerability was handled as a non-public zero-day exploit for at least 24 days. During that time the estimated underground price was around $0-$5k. 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 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. A possible mitigation has been published 2 days after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (97913). Similar entries are available at 97793, 97950, 98124 and 98149.
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 4.7VulDB Meta Temp Score: 4.6
VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.5
NVD Vector: 🔍
CVSSv2
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VulDB Base Score: 🔍
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Exploiting
Class: Out-of-boundsCWE: CWE-125 / CWE-119
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: virglrenderer 0.6.0
Patch: cgit.freedesktop.org
Timeline
02/10/2017 🔍02/13/2017 🔍
02/24/2017 🔍
03/20/2017 🔍
03/20/2017 🔍
03/21/2017 🔍
03/22/2017 🔍
03/23/2017 🔍
09/10/2020 🔍
Sources
Advisory: openwall.comResearcher: Li Qiang
Organization: 360.cn Inc.
Status: Not defined
Confirmation: 🔍
CVE: CVE-2017-5956 (🔍)
SecurityFocus: 96187 - QEMU CVE-2017-5956 Denial of Service Vulnerability
OSVDB: - CVE-2017-5956 - virglrenderer - Out-of-Bounds Array Access Issue
See also: 🔍
Entry
Created: 03/21/2017 07:52Updated: 09/10/2020 12:28
Changes: 03/21/2017 07:52 (78), 09/10/2020 12:28 (3)
Complete: 🔍
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