Unbound up to 1.19.0 NSEC3 RRSET Response denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Unbound up to 1.19.0. It has been declared as problematic. Impacted is an unknown function of the component NSEC3 RRSET Response Handler. Executing a manipulation can lead to denial of service. This vulnerability appears as CVE-2023-50868. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Unbound up to 1.19.0 and classified as problematic. This vulnerability affects some unknown processing of the component NSEC3 RRSET Response Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The weakness was presented 02/13/2024. The advisory is shared for download at seclists.org. This vulnerability was named CVE-2023-50868. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211316 (Fedora 41 : bind / bind-dyndb-ldap (2024-7378be30dd)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.19.1 eliminates this vulnerability. The upgrade is hosted for download at nlnetlabs.nl.

The vulnerability is also documented in the vulnerability database at Tenable (211316). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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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Nessus ID: 211316
Nessus Name: Fedora 41 : bind / bind-dyndb-ldap (2024-7378be30dd)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Unbound 1.19.1

Timelineinfo

12/14/2023 🔍
02/13/2024 +61 days 🔍
02/13/2024 +0 days 🔍
12/23/2025 +679 days 🔍

Sourcesinfo

Advisory: DLA 3736-1
Status: Confirmed

CVE: CVE-2023-50868 (🔍)
GCVE (CVE): GCVE-0-2023-50868
GCVE (VulDB): GCVE-100-253588

Entryinfo

Created: 02/13/2024 18:14
Updated: 12/23/2025 23:08
Changes: 02/13/2024 18:14 (38), 02/15/2024 08:59 (1), 03/04/2024 09:29 (3), 06/11/2024 06:12 (15), 11/15/2024 16:23 (3), 12/23/2025 23:08 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

 Anonymous User (+0)
2 years ago
Good morning,
could you please align to the official cpe of NVD Nist "nlnetlabs:unbound"?
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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