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)).

Applying the patch da885fe1ee8b4589047484bd7fa05a4905b52b17 is able to eliminate this problem.

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

License

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

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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