logback up to 1.2.7 Configuration File deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in logback up to 1.2.7. Impacted is an unknown function of the component Configuration File Handler. The manipulation results in deserialization. This vulnerability is known as CVE-2021-42550. It is possible to launch the attack remotely. Furthermore, an exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in logback up to 1.2.7. Affected is an unknown functionality of the component Configuration File Handler. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 12/17/2021. The advisory is available at jira.qos.ch. This vulnerability is traded as CVE-2021-42550 since 10/15/2021. Technical details are unknown but a public exploit is available.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 241352 (Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : logback vulnerabilities (USN-7616-1)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (241352). 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: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.1
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.6
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 241352
Nessus Name: Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : logback vulnerabilities (USN-7616-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/15/2021 🔍
12/17/2021 +63 days 🔍
12/17/2021 +0 days 🔍
07/04/2025 +1295 days 🔍

Sourcesinfo

Advisory: jira.qos.ch
Status: Not defined
Confirmation: 🔍

CVE: CVE-2021-42550 (🔍)
GCVE (CVE): GCVE-0-2021-42550
GCVE (VulDB): GCVE-100-188490
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/17/2021 07:57
Updated: 07/04/2025 19:56
Changes: 12/17/2021 07:57 (47), 12/22/2021 18:26 (2), 07/04/2025 19:56 (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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