An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).
Published 2021-07-13 13:15:09
Updated 2024-01-24 05:15:10
Source MITRE
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-31810

1.00%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 84 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-31810

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
NIST
5.8
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
3.9
1.4
NIST

References for CVE-2021-31810

Products affected by CVE-2021-31810

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