Knot Resolver up to 5.6.x TCP Reconnect privilege escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Knot Resolver up to 5.6.x. This vulnerability affects unknown code of the component TCP Reconnect Handler. Performing a manipulation results in an unknown weakness. This vulnerability is reported as CVE-2023-46317. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Knot Resolver up to 5.6.x. This affects some unknown functionality of the component TCP Reconnect Handler. The impact remains unknown. The summary by CVE is:

Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.

The weakness was disclosed 10/23/2023. It is possible to read the advisory at gitlab.nic.cz. This vulnerability is uniquely identified as CVE-2023-46317 since 10/22/2023. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 5.7.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at gitlab.nic.cz. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-50538). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Resolver 5.7.0
Patch: gitlab.nic.cz

Timelineinfo

10/22/2023 🔍
10/23/2023 +1 days 🔍
10/23/2023 +0 days 🔍
02/14/2026 +845 days 🔍

Sourcesinfo

Advisory: gitlab.nic.cz
Status: Confirmed

CVE: CVE-2023-46317 (🔍)
GCVE (CVE): GCVE-0-2023-46317
GCVE (VulDB): GCVE-100-243147
EUVD: 🔍

Entryinfo

Created: 10/23/2023 07:25
Updated: 02/14/2026 23:11
Changes: 10/23/2023 07:25 (39), 11/12/2023 16:51 (11), 02/14/2026 23:11 (15)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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