QEMU up to 5.2.0 vmxnet3 NIC Emulator integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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4.5$5k-$25k0.00

Summaryinfo

A vulnerability was found in QEMU up to 5.2.0 and classified as critical. The affected element is an unknown function of the component vmxnet3 NIC Emulator. Executing a manipulation can lead to integer overflow. This vulnerability is registered as CVE-2021-20203. No exploit is available.

Detailsinfo

A vulnerability was found in QEMU up to 5.2.0 (Virtualization Software). It has been declared as critical. This vulnerability affects an unknown code of the component vmxnet3 NIC Emulator. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect availability.

The weakness was published 02/26/2021. The advisory is shared for download at bugs.launchpad.net. This vulnerability was named CVE-2021-20203. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 10/25/2024).

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.

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 vulnerability database at Tenable (209571). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.2
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/17/2020 🔍
02/26/2021 +71 days 🔍
02/26/2021 +0 days 🔍
10/25/2024 +1337 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: bugs.launchpad.net
Status: Not defined

CVE: CVE-2021-20203 (🔍)
GCVE (CVE): GCVE-0-2021-20203
GCVE (VulDB): GCVE-100-170440

Entryinfo

Created: 02/26/2021 08:43
Updated: 10/25/2024 09:57
Changes: 02/26/2021 08:43 (36), 03/05/2021 11:52 (2), 03/05/2021 11:55 (18), 10/25/2024 09:57 (16)
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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