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01 Record

CVE-2023-6481

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

HighPUBLISHEDCNA: NCSC.ch
CNA base score7.1 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

02 Description

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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.68% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 51.9% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-12-04 08:35Z2 YR AGO
Last updated
2024-08-02 08:28Z2 YR AGO
Reserved
2023-12-04
Assigning CNA
NCSC.ch
Record state
PUBLISHED
Severity
High (CVSS 7.1)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weaknesses
  • CWE-400Uncontrolled Resource ConsumptionClass
Data version
5.1
Document digest
461a62919a9cb68e6d2ea093644417d6e13e6ed0234efbbb8f76c5ae65cb2f1e

05 Affected products

VendorProductVersionsPlatforms
QOS.CH SarllogbackNot specifiedWindows, Linux, MacOS

06 References

07 Remediation

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 <receiver></receiver> entries in your configuration files.