Vulnerability Details CVE-2021-37533
Prior to Apache Commons Net 3.9.0, Net's FTP client trusts the host from PASV response by default. A malicious server can redirect the Commons Net code to use a different host, but the user has to connect to the malicious server in the first place. This may lead to leakage of information about services running on the private network of the client. The default in version 3.9.0 is now false to ignore such hosts, as cURL does. See https://issues.apache.org/jira/browse/NET-711.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 37.7%
CVSS Severity
CVSS v3 Score 6.5
References
- http://www.openwall.com/lists/oss-security/2022/12/03/1
- https://lists.apache.org/thread/o6yn9r9x6s94v97264hmgol1sf48mvx7
- https://lists.debian.org/debian-lts-announce/2022/12/msg00038.html
- https://www.debian.org/security/2022/dsa-5307
- http://www.openwall.com/lists/oss-security/2022/12/03/1
- https://lists.apache.org/thread/o6yn9r9x6s94v97264hmgol1sf48mvx7
- https://lists.debian.org/debian-lts-announce/2022/12/msg00038.html
- https://www.debian.org/security/2022/dsa-5307
Products affected by CVE-2021-37533
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cpe:2.3:a:apache:commons_net:-
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cpe:2.3:a:apache:commons_net:1.0.0
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cpe:2.3:a:apache:commons_net:1.1.0
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cpe:2.3:a:apache:commons_net:1.1.1
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cpe:2.3:a:apache:commons_net:1.2.0
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cpe:2.3:a:apache:commons_net:1.2.1
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cpe:2.3:a:apache:commons_net:1.2.2
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cpe:2.3:a:apache:commons_net:1.3.0
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cpe:2.3:a:apache:commons_net:1.4.0
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cpe:2.3:a:apache:commons_net:1.5.0
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cpe:2.3:a:apache:commons_net:2.0
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cpe:2.3:a:apache:commons_net:2.1
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cpe:2.3:a:apache:commons_net:2.2
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cpe:2.3:a:apache:commons_net:3.0
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cpe:2.3:a:apache:commons_net:3.0.1
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cpe:2.3:a:apache:commons_net:3.1
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cpe:2.3:a:apache:commons_net:3.2
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cpe:2.3:a:apache:commons_net:3.3
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cpe:2.3:a:apache:commons_net:3.4
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cpe:2.3:a:apache:commons_net:3.5
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cpe:2.3:a:apache:commons_net:3.6
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cpe:2.3:a:apache:commons_net:3.7
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cpe:2.3:a:apache:commons_net:3.7.1
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cpe:2.3:a:apache:commons_net:3.7.2
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cpe:2.3:a:apache:commons_net:3.8.0
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:11.0