QEMU hw/net/pcnet.c pcnet_receive memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in QEMU. Affected by this vulnerability is the function pcnet_receive of the file hw/net/pcnet.c. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-2015-7512. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in QEMU (Virtualization Software) (version now known). It has been rated as critical. This issue affects the function pcnet_receive of the file hw/net/pcnet.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet.

The weakness was published 01/08/2016 by Jason Wang with Qihoo 360 (Website). It is possible to read the advisory at securitytracker.com. The identification of this vulnerability is CVE-2015-7512 since 09/29/2015. The attack may be initiated remotely. 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 scanner Nessus provides a plugin with the ID 87604 (CentOS 6 : qemu-kvm (CESA-2015:2694)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168775 (SUSE Enterprise Linux Security update for xen (SUSE-SU-2016:1154-1)).

Upgrading 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 (87604), SecurityFocus (BID 78230†) and Vulnerability Center (SBV-55378†). Similar entries are available at VDB-13216, VDB-13276, VDB-13279 and VDB-13280. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.8

VulDB Base Score: 9.0
VulDB Temp Score: 8.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.0
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87604
Nessus Name: CentOS 6 : qemu-kvm (CESA-2015:2694)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 871165
OpenVAS Name: RedHat Update for qemu-kvm RHSA-2015:2694-01
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: 8b98a2f07175d46c3f7217639bd5e03f

Timelineinfo

09/29/2015 🔍
11/30/2015 +62 days 🔍
11/30/2015 +0 days 🔍
12/22/2015 +22 days 🔍
12/23/2015 +1 days 🔍
12/29/2015 +6 days 🔍
01/08/2016 +10 days 🔍
01/08/2016 +0 days 🔍
01/10/2016 +2 days 🔍
07/02/2022 +2365 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: RHSA-2015:2694⛔
Researcher: Jason Wang
Organization: Qihoo 360
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-7512 (🔍)
GCVE (CVE): GCVE-0-2015-7512
GCVE (VulDB): GCVE-100-80135
SecurityFocus: 78230 - QEMU 'hw/net/pcnet.c' Remote Buffer Overflow Vulnerability
SecurityTracker: 1034527
Vulnerability Center: 55378 - Qemu Remote Code Execution in AMD PC-Net II, High

See also: 🔍

Entryinfo

Created: 01/10/2016 20:13
Updated: 07/02/2022 16:14
Changes: 01/10/2016 20:13 (62), 06/19/2018 21:07 (22), 07/02/2022 16:14 (6)
Complete: 🔍
Cache ID: 216:78F:103

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