Fabrice Bellard QEMU 1.7.1 hw/virtio/virtio.c virt_load config_len 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 has been found in Fabrice Bellard QEMU 1.7.1 and classified as problematic. Affected is the function virt_load of the file hw/virtio/virtio.c. Performing a manipulation of the argument config_len results in memory corruption. This vulnerability was named CVE-2014-0182. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic has been found in Fabrice Bellard QEMU 1.7.1 (Virtualization Software). This affects the function virt_load of the file hw/virtio/virtio.c. The manipulation of the argument config_len with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Heap-based buffer overflow in the virtio_load function in hw/virtio/virtio.c in QEMU before 1.7.2 might allow remote attackers to execute arbitrary code via a crafted config length in a savevm image.

The weakness was presented 04/17/2014 by Petr Matousek as Bug 1088986 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2014-0182 since 12/03/2013. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/17/2021). The reason for this vulnerability is this part of code: 

vdev->config_len = qemu_get_be32(f);
qemu_get_buffer(f, vdev->config, vdev->config_len);

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 123337 (Fedora Security Update for qemu (FEDORA-2015-1886)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (92672), Tenable (74047), Secunia (SA57901†) and Vulnerability Center (SBV-45705†). See VDB-12735, VDB-13220, VDB-13254 and VDB-13267 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Not Affected

  • Red Hat Enterprise Linux 5

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: 80056
OpenVAS Name: Oracle Linux Local Check: ELSA-2014-0927
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/03/2013 🔍
04/17/2014 +135 days 🔍
04/21/2014 +4 days 🔍
04/23/2014 +2 days 🔍
05/19/2014 +26 days 🔍
08/07/2014 +80 days 🔍
11/04/2014 +89 days 🔍
06/17/2021 +2417 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: Bug 1088986
Researcher: Petr Matousek
Status: Not defined
Confirmation: 🔍

CVE: CVE-2014-0182 (🔍)
GCVE (CVE): GCVE-0-2014-0182
GCVE (VulDB): GCVE-100-13023

OVAL: 🔍

X-Force: 92672 - QEMU virt_load() buffer overflow, Medium Risk
Secunia: 57901 - Qemu "virt_load()" Buffer Overflow Vulnerability, Less Critical
Vulnerability Center: 45705 - Qemu <1.7.2 Remote Code Execution and DoS due to Out-of-Bounds Write in Virtio, High

See also: 🔍

Entryinfo

Created: 04/23/2014 12:00
Updated: 06/17/2021 14:17
Changes: 04/23/2014 12:00 (77), 06/03/2017 07:51 (5), 06/17/2021 14:17 (3)
Complete: 🔍
Cache ID: 216:03B:103

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