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CVE-2021-31810

Common vulnerabilities & exposures (CVE)

CVE databaseCVE database blogpostRelease & EoL database
 
Published at: - 13-07-2021 03:15
Last modified: - 12-05-2022 04:07
Total changes: - 7

Description

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).

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Low
Attack complexity
Network
Attack vector
None
Availability
Low
Confidentiality
None
Integrity
None
Privileges required
Changed
Scope
None
User interaction
5.8
Base score
3.9
1.4
Exploitability score
Impact score
 

Verification logic

OR
AND
OR
vendor=ruby-lang AND product=ruby AND versionEndIncluding=3.0.1 AND versionStartIncluding=3.0.0
vendor=ruby-lang AND product=ruby AND versionEndIncluding=2.7.3 AND versionStartIncluding=2.7.0
vendor=ruby-lang AND product=ruby AND versionEndIncluding=2.6.7
OR
vendor=fedoraproject AND product=fedora AND version=34
OR
vendor=Debian AND product=debian_linux AND version=9.0
OR
vendor=oracle AND product=jd_edwards_enterpriseone_tools AND versionEndExcluding=9.2.6.1
 

Reference

 


Keywords

NVD

 

CVE-2021-31810

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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