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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5.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Fabrice Bellard QEMU 1.7.0. The impacted element is an unknown function of the file pl022.c. This manipulation of the argument tx_fifo_head/rx_fifo_head causes memory corruption. This vulnerability appears as CVE-2013-4530. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

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 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. The summary by CVE is:

Buffer overflow in hw/ssi/pl022.c in QEMU before 1.7.2 allows remote attackers to cause a denial of service or possibly execute arbitrary code via crafted tx_fifo_head and rx_fifo_head values in a savevm image.

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), Tenable (74047), SecurityFocus (BID 67483†), OSVDB (106045†) and Vulnerability Center (SBV-47092†). See VDB-13023, VDB-13254, VDB-13266 and VDB-13267 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Not Affected

  • Red Hat Enterprise Linux 5/6

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CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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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: 🔍

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

CVE: CVE-2013-4530 (🔍)
GCVE (CVE): GCVE-0-2013-4530
GCVE (VulDB): GCVE-100-13273

OVAL: 🔍

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

See also: 🔍

Entryinfo

Created: 05/22/2014 11:12
Updated: 06/20/2021 07:33
Changes: 05/22/2014 11:12 (78), 06/12/2017 08:17 (7), 06/20/2021 07:33 (3)
Complete: 🔍
Cache ID: 216:E52:103

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