CVE-2021-45046 · netVigilance record NV23-0055
Apache Log4j2 Deserialization of Untrusted Data
past due ransomware
What to do
Apply updates per vendor instructions.
CISA deadline 2023-05-22 · passed 3 years 3 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Apache Log4j2 contains a deserialization of untrusted data vulnerability due to the incomplete fix of CVE-2021-44228, where the Thread Context Lookup Pattern is vulnerable to remote code execution in certain non-default configurations.
Who is affected
Apache Log4j2. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-917.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 3 years 3 months ago
Sources
- NVD entry for CVE-2021-45046 nvd.nist.gov/vuln/detail/CVE-2021-45046
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- logging.apache.org logging.apache.org/log4j/2.x/security.html
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2021-45046