CVE-2021-45105: Improper Input Validation
(updated )
Apache Log4j2 does not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted.
References
- www.openwall.com/lists/oss-security/2021/12/19/1
- cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf
- logging.apache.org/log4j/2.x/security.html
- nvd.nist.gov/vuln/detail/CVE-2021-45105
- security.netapp.com/advisory/ntap-20211218-0001/
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
- www.debian.org/security/2021/dsa-5024
- www.kb.cert.org/vuls/id/930724
- www.zerodayinitiative.com/advisories/ZDI-21-1541/
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