Fabrice Bellard QEMU 1.7.0 State Loader ssd0323_load memory corruption

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

Summaryinfo

A vulnerability categorized as problematic has been discovered in Fabrice Bellard QEMU 1.7.0. This vulnerability affects the function ssd0323_load of the component State Loader. Such manipulation leads to memory corruption. This vulnerability is referenced as CVE-2013-4538. No exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Fabrice Bellard QEMU 1.7.0 (Virtualization Software) and classified as problematic. Affected by this issue is the function ssd0323_load of the component State Loader. 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 weakness was published 02/18/2014 by Petr Matousek as Bug 1066393 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2013-4538 since 06/12/2013. 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 advisory points out:

s->cmd_len used as index in ssd0323_transfer() to store 32-bit field. Possible this field might then be supplied by guest to overwrite a return addr somewhere. Same for row/col fields, which are indicies into framebuffer array. 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 168775 (SUSE Enterprise Linux Security update for xen (SUSE-SU-2016:1154-1)).

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 (93237), Tenable (74047), SecurityFocus (BID 67483†), OSVDB (106041†) and Vulnerability Center (SBV-47066†). Similar entries are available at VDB-13023, VDB-13216, VDB-13254 and VDB-13266. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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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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 🔍
11/13/2014 +9 days 🔍
06/20/2021 +2411 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: Bug 1066393
Researcher: Petr Matousek
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-4538 (🔍)
GCVE (CVE): GCVE-0-2013-4538
GCVE (VulDB): GCVE-100-13280

OVAL: 🔍

X-Force: 93237 - QEMU ssd0323_load() code execution, Medium Risk
SecurityFocus: 67483 - QEMU Multiple Memory Corruption Vulnerabilities
OSVDB: 106041
Vulnerability Center: 47066 - QEMU Prior to 1.7.2 Remote Code Execution Vulnerability due to Buffer Overflow in the ssd0323_load Function, High

See also: 🔍

Entryinfo

Created: 05/22/2014 12:05
Updated: 06/20/2021 08:27
Changes: 05/22/2014 12:05 (76), 06/12/2017 08:10 (7), 06/20/2021 08:26 (3), 06/20/2021 08:27 (1)
Complete: 🔍
Cache ID: 216:2FF:103

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