QEMU up to 3.1.0 hw/i2c/i2c-ddc.c i2c_ddc out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in QEMU up to 3.1.0. It has been declared as critical. Impacted is the function i2c_ddc of the file hw/i2c/i2c-ddc.c. The manipulation results in out-of-bounds. This vulnerability is cataloged as CVE-2019-3812. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability classified as critical has been found in QEMU up to 3.1.0 (Virtualization Software). Affected is the function i2c_ddc of the file hw/i2c/i2c-ddc.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

The bug was discovered 02/18/2019. The weakness was shared 02/19/2019 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2019-3812 since 01/03/2019. The attack needs to be approached locally. Required for exploitation is a authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. 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 197406 (Ubuntu Security Notification for Qemu Vulnerabilities (USN-3923-1)).

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 106007†). The entries VDB-127906, VDB-127968, VDB-127970 and VDB-128069 are related to this item. Once again VulDB remains the best source for vulnerability data.

Not Affected

  • QEMU 2.9

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 4.4
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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: 🔍

Timelineinfo

11/22/2018 🔍
01/03/2019 +42 days 🔍
02/18/2019 +46 days 🔍
02/19/2019 +1 days 🔍
02/20/2019 +1 days 🔍
10/26/2024 +2075 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: USN-3923-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-3812 (🔍)
GCVE (CVE): GCVE-0-2019-3812
GCVE (VulDB): GCVE-100-131004
SecurityFocus: 106007 - QEMU CVE-2018-19489 Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 02/20/2019 07:58
Updated: 10/26/2024 21:14
Changes: 02/20/2019 07:58 (63), 05/11/2020 11:39 (4), 07/11/2023 11:21 (3), 07/11/2023 11:28 (12), 10/26/2024 21:14 (17)
Complete: 🔍
Cache ID: 216::103

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