tcpprep 4.4.3 macinstring denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in tcpprep 4.4.3. This impacts the function macinstring. This manipulation causes denial of service. This vulnerability appears as CVE-2023-27786. The attack may be initiated remotely. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in tcpprep 4.4.3. It has been declared as problematic. Affected by this vulnerability is the function macinstring. 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 summary by CVE is:

An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.

The weakness was presented 03/16/2023 as 782. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-27786 since 03/05/2023. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 214723 (Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Tcpreplay vulnerabilities (USN-7231-1)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at Tenable (214723) and EUVD (EUVD-2023-31522). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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: 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: 214723
Nessus Name: Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Tcpreplay vulnerabilities (USN-7231-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

03/05/2023 🔍
03/16/2023 +11 days 🔍
03/16/2023 +0 days 🔍
11/23/2025 +983 days 🔍

Sourcesinfo

Advisory: 782
Status: Confirmed

CVE: CVE-2023-27786 (🔍)
GCVE (CVE): GCVE-0-2023-27786
GCVE (VulDB): GCVE-100-223243
EUVD: 🔍

Entryinfo

Created: 03/16/2023 20:34
Updated: 11/23/2025 17:05
Changes: 03/16/2023 20:34 (40), 01/29/2025 02:12 (17), 02/26/2025 19:58 (11), 11/23/2025 17:05 (1)
Complete: 🔍
Cache ID: 216::103

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

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