Dnsmasq 2.86 print_mac heap-based overflow ⚔ [Disputed]

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

A vulnerability, which was classified as critical, has been found in Dnsmasq 2.86 (Domain Name Software). This issue affects the function print_mac. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability.

The weakness was published 01/01/2022. It is possible to read the advisory at bugs.chromium.org. The identification of this vulnerability is CVE-2021-45956 since 12/31/2021. Technical details of the vulnerability are known, but there is no available exploit.

The real existence of this vulnerability is still doubted at the moment.

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

Similar entries are available at VDB-172683, VDB-189502, VDB-189511 and VDB-189512.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/31/2021 🔍
01/01/2022 +1 days 🔍
01/01/2022 +0 days 🔍
08/01/2024 +943 days 🔍

Sourcesinfo

Advisory: bugs.chromium.org
Status: Confirmed
Confirmation: 🔍
Disputed: 🔍

CVE: CVE-2021-45956 (🔍)
See also: 🔍

Entryinfo

Created: 01/01/2022 10:16 AM
Updated: 08/01/2024 05:28 PM
Changes: 01/01/2022 10:16 AM (38), 01/05/2022 12:07 PM (1), 07/18/2024 07:07 PM (35), 08/01/2024 05:28 PM (11)
Complete: 🔍
Cache ID: 3:785:40

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