VDB
DEBIAN-CVE-2021-45046
DEBIAN-CVE-2021-45046
PUBLISHED
CVSS 9 CRITICAL
It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. This could allows attackers with control over Thread Context Map (MDC) input data when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) to craft malicious input data using a JNDI Lookup pattern resulting in an information leak and remote code execution in some environments and local code execution in all environments. Log4j 2.16.0 (Java 8) and 2.12.2 (Java 7) fix this issue by removing support for message lookup patterns and disabling JNDI functionality by default.
Risk Scores
CVSS 3.1
9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | apache-log4j2 | 0, 0, 0 |
| Debian:11 | apache-log4j2 | 2.15.0-1, 0, 2.13.3-1 |
| Debian:13 | apache-log4j2 | 0, 0, 0 |
| Debian:14 | apache-log4j2 | 0, 0, 0 |
Exploit Intelligence
- Find vulnerable Log4j2 versions on disk and also inside Java Archive Files (Log4Shell CVE-2021-44228, CVE-2021-45046, CVE-2021-45105) (github-poc-repo)
- A vulnerable Spring Boot application that uses log4j and is vulnerable to CVE-2021-44228, CVE-2021-44832, CVE-2021-45046 and CVE-2021-45105 (github-poc-repo)
- Tool that runs a test to check whether one of your applications is affected by the recent vulnerabilities in log4j: CVE-2021-44228 and CVE-2021-45046 (github-poc-repo)
- This repository contains all gathered resources we used during our Incident Reponse on CVE-2021-44228 and CVE-2021-45046 aka Log4Shell. (github-poc-repo)
- CVE-2021-42287/CVE-2021-42278/OTHER Scanner & Exploiter. (github-poc-repo)
- CVE-2021-42287/CVE-2021-42278/OTHER Scanner & Exploiter. (github-poc-repo)
- Fastest filesystem scanner for log4shell (CVE-2021-44228, CVE-2021-45046) and other vulnerable (CVE-2017-5645, CVE-2019-17571, CVE-2022-23305, CVE-2022-23307 ... ) instances of log4j library. Excellent performance and low memory footprint. (github-poc-repo)
- Log4Shell / Log4J Payload - CVE-2021-45046 and CVE-2022-42889 (github-poc-repo)
- Log4Shell / Log4J Payload - CVE-2021-45046 and CVE-2022-42889 (github-poc)
- shaily29-eng/CyberSecurity_CVE-2021-45046 (github-poc)
…and 22 more exploits
Timeline
- Dec 14, 2021 CVE Published
- Apr 28, 2026 CVE Updated