Fabrice Bellard QEMU 1.7.0 hw/ide/ahci.c memory corruption

CVSS Meta Temp Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Fabrice Bellard QEMU 1.7.0. This issue affects some unknown processing of the file hw/ide/ahci.c. Executing a manipulation can lead to memory corruption. This vulnerability is registered as CVE-2013-4526. No exploit is available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability has been found in Fabrice Bellard QEMU 1.7.0 (Virtualization Software) and classified as problematic. This vulnerability affects an unknown code block of the file hw/ide/ahci.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in hw/ide/ahci.c in QEMU before 1.7.2 allows remote attackers to cause a denial of service and possibly execute arbitrary code via vectors related to migrating ports.

The weakness was published 02/18/2014 by Petr Matousek as Bug 1066345 as confirmed bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2013-4526 since 06/12/2013. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The advisory points out:

An user able to alter the savevm data (either on the disk or over the wire during migration) could use this flaw to to corrupt QEMU process memory on the (destination) host, which could potentially result in arbitrary code execution on the host with the privileges of the QEMU process.

The vulnerability scanner Nessus provides a plugin with the ID 74047 (Fedora 20 : qemu-1.6.2-5.fc20 (2014-6288)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195610 (Ubuntu Security Notification for Qemu, Qemu-kvm Vulnerabilities (USN-2342-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (93227), Tenable (74047), SecurityFocus (BID 67483†), OSVDB (106047†) and Vulnerability Center (SBV-47086†). Similar entries are available at VDB-13023, VDB-13254, VDB-13266 and VDB-13267. 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: 5.9
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74047
Nessus Name: Fedora 20 : qemu-1.6.2-5.fc20 (2014-6288)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for qemu FEDORA-2014-6288
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.qemu.org

Timelineinfo

06/12/2013 🔍
02/18/2014 +251 days 🔍
02/18/2014 +0 days 🔍
05/16/2014 +87 days 🔍
05/19/2014 +3 days 🔍
05/22/2014 +3 days 🔍
11/04/2014 +166 days 🔍
11/17/2014 +13 days 🔍
06/20/2021 +2407 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: Bug 1066345
Researcher: Petr Matousek
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-4526 (🔍)
GCVE (CVE): GCVE-0-2013-4526
GCVE (VulDB): GCVE-100-13270

OVAL: 🔍

X-Force: 93227 - QEMU ahci.c code execution, Medium Risk
SecurityFocus: 67483 - QEMU Multiple Memory Corruption Vulnerabilities
OSVDB: 106047
Vulnerability Center: 47086 - QEMU before 1.7.2 Remote DoS and Code Execution Related to Migrating Ports - CVE-2013-4526, High

See also: 🔍

Entryinfo

Created: 05/22/2014 09:53
Updated: 06/20/2021 07:15
Changes: 05/22/2014 09:53 (76), 06/12/2017 08:15 (7), 06/20/2021 07:15 (3)
Complete: 🔍
Cache ID: 216:8AC:103

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