Alpine up to 2.24 STARTTLS denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Alpine up to 2.24 and classified as problematic. This affects an unknown part of the component STARTTLS Handler. The manipulation results in denial of service. This vulnerability is cataloged as CVE-2021-46853. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Alpine up to 2.24. It has been classified as problematic. Affected is an unknown code of the component STARTTLS Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

Alpine before 2.25 allows remote attackers to cause a denial of service (daemon crash) when LIST or LSUB is sent before STARTTLS.

The weakness was shared 11/03/2022. The advisory is available at bugs.gentoo.org. This vulnerability is traded as CVE-2021-46853 since 11/03/2022. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 232988 (Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Alpine vulnerabilities (USN-7360-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.25 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (232988). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
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: 232988
Nessus Name: Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Alpine vulnerabilities (USN-7360-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Alpine 2.25

Timelineinfo

11/03/2022 🔍
11/03/2022 +0 days 🔍
11/03/2022 +0 days 🔍
03/20/2025 +868 days 🔍

Sourcesinfo

Advisory: bugs.gentoo.org
Status: Confirmed

CVE: CVE-2021-46853 (🔍)
GCVE (CVE): GCVE-0-2021-46853
GCVE (VulDB): GCVE-100-212874

Entryinfo

Created: 11/03/2022 12:37
Updated: 03/20/2025 19:30
Changes: 11/03/2022 12:37 (39), 12/04/2022 09:50 (12), 03/20/2025 19:30 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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