Fabrice Bellard QEMU 1.7.0 pl022.c tx_fifo_head/rx_fifo_head memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Fabrice Bellard QEMU 1.7.0 (Virtualization Software). It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file pl022.c. The manipulation of the argument tx_fifo_head/rx_fifo_head with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The software 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.

The weakness was presented 02/18/2014 by Petr Matousek as Bug 1066354 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2013-4530 since 06/12/2013. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. 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 168804 (SUSE Enterprise Linux Security update for xen (SUSE-SU-2016:1318-1)).

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 (93230), Vulnerability Center (SBV-47092) and Tenable (74047). See 13023, 13254, 13266 and 13267 for similar entries.

Not Affected

  • Red Hat Enterprise Linux 5/6






  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
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Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

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Nessus ID: 74047
Nessus Name: Fedora 20 : qemu-1.6.2-5.fc20 (2014-6288)
Nessus File: 🔍
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OpenVAS ID: 867773
OpenVAS Name: Fedora Update for qemu FEDORA-2014-6288
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Threat Intelligenceinfo

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Recommended: Patch
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Patch: git.qemu.org


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 🔍


Vendor: bellard.org

Advisory: Bug 1066354
Researcher: Petr Matousek
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-4530 (🔍)

X-Force: 93230 - QEMU pl022.c buffer overflow, Medium Risk
Vulnerability Center: 47092 - QEMU before 1.7.2 Remote DoS or Code Execution via a Crafted Savevm Image - CVE-2013-4530, High
SecurityFocus: 67483 - QEMU Multiple Memory Corruption Vulnerabilities
OSVDB: 106045

See also: 🔍


Created: 05/22/2014 11:12 AM
Updated: 06/20/2021 07:33 AM
Changes: 05/22/2014 11:12 AM (78), 06/12/2017 08:17 AM (7), 06/20/2021 07:33 AM (3)
Complete: 🔍


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