QEMU up to 1.7.1 VNC Display Driver out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.16

Summaryinfo

A vulnerability was found in QEMU up to 1.7.1 and classified as problematic. This issue affects some unknown processing of the component VNC Display Driver. The manipulation results in out-of-bounds. This vulnerability is known as CVE-2017-2633. Attacking locally is a requirement. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in QEMU up to 1.7.1 (Virtualization Software). It has been classified as problematic. Affected is an unknown code of the component VNC Display Driver. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, and availability. CVE summarizes:

An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.

The bug was discovered 05/09/2017. The weakness was published 07/27/2018 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2017-2633 since 11/30/2016. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 84 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102655 (Scientific Linux Security Update : qemu-kvm on SL7.x x86_64 (20170801)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Scientific Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169868 (SUSE Enterprise Linux Security Update for xen (SUSE-SU-2017:1081-1)).

Upgrading to version 1.7.2 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (102655) and SecurityFocus (BID 96417†). Similar entries are available at VDB-98162 and VDB-98170. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.2
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 102655
Nessus Name: Scientific Linux Security Update : qemu-kvm on SL7.x x86_64 (20170801)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881932
OpenVAS Name: CentOS Update for qemu-guest-agent CESA-2017:1206 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: QEMU 1.7.2
Patch: 9f64916da20eea67121d544698676295bbb105a7

Timelineinfo

11/30/2016 🔍
02/23/2017 +84 days 🔍
05/09/2017 +75 days 🔍
08/01/2017 +83 days 🔍
08/22/2017 +21 days 🔍
07/27/2018 +338 days 🔍
07/27/2018 +0 days 🔍
07/28/2018 +1 days 🔍
04/27/2023 +1734 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: RHSA-2017:1205
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-2633 (🔍)
GCVE (CVE): GCVE-0-2017-2633
GCVE (VulDB): GCVE-100-122280
SecurityFocus: 96417 - QEMU CVE-2017-2633 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 07/28/2018 07:37
Updated: 04/27/2023 12:52
Changes: 07/28/2018 07:37 (76), 03/10/2020 21:13 (3), 04/27/2023 12:52 (6)
Complete: 🔍
Cache ID: 216:6F9:103

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