SB2025070331 - Ubuntu update for logback

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2025070331

SB2025070331 - Ubuntu update for logback

Published: July 3, 2025

Security Bulletin ID SB2025070331
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Code Injection (CVE-ID: CVE-2021-42550)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote user can send a specially crafted request to the application and execute arbitrary code on the target system by tricking the application to load a malicious configuration from a remote LDAP server.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


2) Deserialization of Untrusted Data (CVE-ID: CVE-2023-6378)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insecure input validation when processing serialized data in logback receiver component. A remote attacker can pass specially crafted data to the application and cause a denial of service condition on the target system.


Remediation

Install update from vendor's website.

References