QEMU exec.c address_space_write_continue out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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3.3$0-$5k0.00

Summaryinfo

A vulnerability was found in QEMU and classified as problematic. Impacted is the function address_space_write_continue of the file exec.c. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2017-11334. The attack can only be performed from a local environment. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in QEMU (Virtualization Software) (the affected version is unknown). Affected by this issue is the function address_space_write_continue of the file exec.c. The manipulation 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. CVE summarizes:

The address_space_write_continue function in exec.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (out-of-bounds access and guest instance crash) by leveraging use of qemu_map_ram_ptr to access guest ram block area.

The bug was discovered 07/17/2017. The weakness was published 08/02/2017 by Alex (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2017-11334 since 07/14/2017. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 16 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102209 (Debian DSA-3925-1 : qemu - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157870 (Oracle Enterprise Linux Security Update for qemu (ELSA-2018-4285)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (102209) and SecurityFocus (BID 99895†). Similar entries are available at VDB-104779, VDB-105675, VDB-105918 and VDB-106077. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 2.3
VulDB Temp Score: 2.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
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: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 102209
Nessus Name: Debian DSA-3925-1 : qemu - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703925
OpenVAS Name: Debian Security Advisory DSA 3925-1 (qemu - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

07/14/2017 🔍
07/17/2017 +3 days 🔍
07/21/2017 +4 days 🔍
08/02/2017 +12 days 🔍
08/02/2017 +0 days 🔍
08/03/2017 +1 days 🔍
08/04/2017 +1 days 🔍
08/07/2017 +3 days 🔍
12/14/2022 +1955 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: RHSA-2017:3369
Researcher: Mr Alex. (Alex)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11334 (🔍)
GCVE (CVE): GCVE-0-2017-11334
GCVE (VulDB): GCVE-100-104780

OVAL: 🔍

SecurityFocus: 99895 - QEMU CVE-2017-11334 Out of Bounds Read and Write Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 08/03/2017 10:39
Updated: 12/14/2022 16:03
Changes: 08/03/2017 10:39 (76), 11/03/2019 10:52 (6), 01/07/2021 08:47 (3), 12/14/2022 16:03 (3)
Complete: 🔍
Cache ID: 216::103

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