QEMU 3.1.0 device_tree.c load_image memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in QEMU 3.1.0. Affected by this issue is the function load_image of the file device_tree.c. Such manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2018-20815. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in QEMU 3.1.0 (Virtualization Software) and classified as critical. Affected by this issue is the function load_image of the file device_tree.c. 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. CVE summarizes:

In QEMU 3.1.0, load_device_tree in device_tree.c calls the deprecated load_image function, which has a buffer overflow risk.

The bug was discovered 03/27/2019. The weakness was disclosed 05/31/2019 by Michael Hanselmann (Website). The advisory is shared for download at seclists.org. This vulnerability is handled as CVE-2018-20815 since 03/26/2019. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 65 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 209571 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176895 (Debian Security Update for qemu (DLA 1781-1)).

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 Tenable (209571) and SecurityFocus (BID 107059†). The entries VDB-132018, VDB-132071 and VDB-138905 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Name

Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: da885fe1ee8b4589047484bd7fa05a4905b52b17

Timelineinfo

02/18/2019 🔍
03/26/2019 +36 days 🔍
03/27/2019 +1 days 🔍
05/31/2019 +65 days 🔍
06/01/2019 +1 days 🔍
10/26/2024 +1974 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: RHSA-2019:1667
Researcher: Michael Hanselmann
Status: Confirmed

CVE: CVE-2018-20815 (🔍)
GCVE (CVE): GCVE-0-2018-20815
GCVE (VulDB): GCVE-100-135752
SecurityFocus: 107059 - QEMU CVE-2019-3812 Out-Of-Bounds Read Local Information Disclosure Vulnerability
OSVDB: - QEMU load_device_tree() function buffer overflow

See also: 🔍

Entryinfo

Created: 06/01/2019 08:01
Updated: 10/26/2024 21:14
Changes: 06/01/2019 08:01 (62), 06/17/2020 14:13 (4), 09/25/2023 13:18 (5), 10/26/2024 21:14 (20)
Complete: 🔍
Cache ID: 216::103

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