CVE-2023-6481

Logback "receiver" DOS vulnerability CVE-2023-6378 incomplete fix

Description

A serialization vulnerability in logback receiver component part of logback version 1.4.13, 1.3.13 and 1.2.12 allows an attacker to mount a Denial-Of-Service attack by sending poisoned data.

Remediation

Solution:

Only environments where logback receiver component is deployed may be vulnerable. In case a logback receiver is deployed, restricting connections to trustworthy clients or upgrading to logback version 1.4.14, 1.3.14, 1.2.13 or later will remedy the vulnerability. If you do not need to deploy logback-receiver, then please verify that you do not have any entries in your configuration files.

Workaround:

Logback versions 1.2.13 and later, 1.3.14 and later or 1.4.14 and later provides fixes. However, please note that these fixes are only effective when deployed under Java 9 or later.

7.1

CVSS

Severity: High

CVSS 3.1 •

EPSS 0.32%

Affected: QOS.CH Sarl logback

References

Link	Tags
https://logback.qos.ch/news.html#1.3.12	release notes
https://logback.qos.ch/news.html#1.3.14	release notes

Frequently Asked Questions

What is the severity of CVE-2023-6481?: CVE-2023-6481 has been scored as a high severity vulnerability.
How to fix CVE-2023-6481?: To fix CVE-2023-6481: Only environments where logback receiver component is deployed may be vulnerable. In case a logback receiver is deployed, restricting connections to trustworthy clients or upgrading to logback version 1.4.14, 1.3.14, 1.2.13 or later will remedy the vulnerability. If you do not need to deploy logback-receiver, then please verify that you do not have any entries in your configuration files.
Is CVE-2023-6481 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-6481 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-6481?: CVE-2023-6481 affects QOS.CH Sarl logback.

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