CVE-2021-45105 (GCVE-0-2021-45105)

Vulnerability from cvelistv5 – Published: 2021-12-18 11:55 – Updated: 2024-08-04 04:39
VLAI?
Title
Apache Log4j2 does not always protect from infinite recursion in lookup evaluation
Summary
Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did 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. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.
Severity ?
No CVSS data available.
CWE
  • CWE-20 - Improper Input Validation
  • CWE-674 - Uncontrolled Recursion
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Log4j2 Affected: log4j-core , < 2.17.0 (custom)
Create a notification for this product.
Credits
Independently discovered by Hideki Okamoto of Akamai Technologies, Guy Lederfein of Trend Micro Research working with Trend Micro’s Zero Day Initiative, and another anonymous vulnerability researcher
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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