VDB-97793 · CVE-2017-6355 · BID 96460

virglrenderer up to 0.5.x vrend_renderer.c vrend_create_shader integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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4.5$0-$5k0.00

A vulnerability was found in virglrenderer up to 0.5.x. It has been rated as problematic. This issue affects the function vrend_create_shader of the file vrend_renderer.c. 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 availability. The summary by CVE is:

Integer overflow in the vrend_create_shader function in vrend_renderer.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (process crash) via crafted pkt_length and offlen values, which trigger an out-of-bounds access.

The bug was discovered 02/27/2017. The weakness was presented 03/10/2017 by Li Qiang with 360.cn Inc. (oss-sec). The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2017-6355 since 02/27/2017. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 10 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. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (97913). See 97950, 98124, 98149 and 98152 for similar entries.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 4.7
VulDB 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: 🔍

CVSSv2info

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Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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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: 🔍
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Qualys ID: 🔍
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: virglrenderer 0.6.0

Timelineinfo

02/27/2017 🔍
02/27/2017 +0 days 🔍
02/28/2017 +1 days 🔍
03/09/2017 +9 days 🔍
03/10/2017 +1 days 🔍
03/10/2017 +0 days 🔍
03/22/2017 +12 days 🔍
03/23/2017 +1 days 🔍
09/05/2020 +1262 days 🔍

Sourcesinfo

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

CVE: CVE-2017-6355 (🔍)
SecurityFocus: 96460 - Virglrenderer CVE-2017-6355 Integer Overflow Vulnerability
OSVDB: - CVE-2017-6355 - virglrenderer - Integer Overflow Issue

See also: 🔍

Entryinfo

Created: 03/10/2017 09:52
Updated: 09/05/2020 18:11
Changes: 03/10/2017 09:52 (75), 09/05/2020 18:11 (5)
Complete: 🔍

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