What is CVE-2023-6378?

CVE-2023-6378 is a high-severity vulnerability in Qos Logback, classified under Deserialization of Untrusted Data. CVSS score: 7.1/10. Published 2023-11-29.

How severe is CVE-2023-6378?

High severity. CVSS v3 base score is 7.1 out of 10.

Is CVE-2023-6378 known to be exploited?

19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Qos Logback

CVE-2023-6378

A serialization vulnerability in logback receiver component part of logback version 1.4.11 allows an attacker to mount a Denial-Of-Service attack by sending poisoned data.

Vulnerability class: Insecure Deserialization

EPSS: 0.009 (55.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Qos Logback
Qos.ch Sarl Logback — versions 1.4.12, 1.3.12, 1.2.13

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

References

vulnerability@ncsc.ch (Release Notes)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-6378?: CVE-2023-6378 is a high-severity vulnerability in Qos Logback, classified under Deserialization of Untrusted Data. CVSS score: 7.1/10. Published 2023-11-29.
How severe is CVE-2023-6378?: High severity. CVSS v3 base score is 7.1 out of 10.
Is CVE-2023-6378 known to be exploited?: 19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.