Vulnerability Details : CVE-2021-29425

In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like "//../foo", or "\\..\foo", the result would be the same value, thus possibly providing access to files in the parent directory, but not further above (thus "limited" path traversal), if the calling code would use the result to construct a path value.
Published 2021-04-13 07:15:12
Updated 2022-10-27 13:19:57
Source Apache Software Foundation
View at NVD,   CVE.org
Vulnerability category: Directory traversalInput validation

Products affected by CVE-2021-29425

Exploit prediction scoring system (EPSS) score for CVE-2021-29425

EPSS FAQ
0.19%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 57 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-29425

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.8
 MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:N
8.6
4.9
 NIST
4.8
 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
2.2
2.5
 NIST

CWE ids for CVE-2021-29425

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: security@apache.org (Secondary)
  • The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-29425

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