HP Print/Digital Sending Link-Local Multicast Name Resolution buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.0$5k-$25k0.00

Summaryinfo

A vulnerability was found in HP Print and Digital Sending and classified as critical. Impacted is an unknown function of the component Link-Local Multicast Name Resolution. The manipulation results in buffer overflow. This vulnerability is reported as CVE-2021-3942. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in HP Print and Digital Sending (the affected version is unknown). Affected is an unknown code of the component Link-Local Multicast Name Resolution. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Certain HP Print products and Digital Sending products may be vulnerable to potential remote code execution and buffer overflow with use of Link-Local Multicast Name Resolution or LLMNR.

The weakness was disclosed 12/13/2022. The advisory is shared for download at support.hp.com. This vulnerability is traded as CVE-2021-3942 since 11/09/2021. 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 04/26/2025).

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

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

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 8.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
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: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/09/2021 🔍
12/13/2022 +399 days 🔍
12/13/2022 +0 days 🔍
04/26/2025 +865 days 🔍

Sourcesinfo

Vendor: hp.com

Advisory: support.hp.com
Status: Confirmed

CVE: CVE-2021-3942 (🔍)
GCVE (CVE): GCVE-0-2021-3942
GCVE (VulDB): GCVE-100-215352

Entryinfo

Created: 12/13/2022 07:43
Updated: 04/26/2025 05:01
Changes: 12/13/2022 07:43 (37), 04/26/2025 05:01 (27)
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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