OpenBSD Kernel Multicast Routing uninitialized resource

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in OpenBSD Kernel. Affected is an unknown function of the component Multicast Routing Handler. The manipulation results in uninitialized resource. This vulnerability is known as CVE-2021-35000. Attacking locally is a requirement. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in OpenBSD Kernel (affected version unknown). Affected is an unknown functionality of the component Multicast Routing Handler. The manipulation with an unknown input leads to a uninitialized resource vulnerability. CWE is classifying the issue as CWE-908. The product uses or accesses a resource that has not been initialized. This is going to have an impact on confidentiality. CVE summarizes:

OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability. This vulnerability allows local attackers to disclose sensitive information on affected installations of OpenBSD Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the implementation of multicast routing. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-16112.

The advisory is shared for download at zerodayinitiative.com. This vulnerability is traded as CVE-2021-35000 since 06/17/2021. The exploitability is told to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 3.3
CNA Vector (Zero Day Initiative): 🔍

CVSSv2info

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

Exploitinginfo

Class: Uninitialized resource
CWE: CWE-908
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/17/2021 🔍
05/07/2024 +1055 days 🔍
05/08/2024 +0 days 🔍
09/19/2024 +134 days 🔍

Sourcesinfo

Vendor: openbsd.org

Advisory: ZDI-22-012
Status: Confirmed

CVE: CVE-2021-35000 (🔍)
GCVE (CVE): GCVE-0-2021-35000
GCVE (VulDB): GCVE-100-263460

Entryinfo

Created: 05/08/2024 01:38
Updated: 09/19/2024 15:44
Changes: 05/08/2024 01:38 (63), 05/08/2024 10:52 (1), 09/19/2024 15:44 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

 Anonymous User (+0)
2 years ago
Good morning,
We cannot find the cpe indicated by You in the NVD Nist dictionary.
Could you use the official cpe openbsd:openbsd?
We would appreciate it very much.
Best Regards,
TEAM CERT
 VulDB Community Team2 years ago
Thank you, we have just aligned the CPE.

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