CVE-2021-31810

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).

CVSS v3.0 5.8 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.8^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://www.ruby-lang.org/en/news/2021/07/07/trusting-pasv-responses-in-net-ftp/	Vendor Advisory
https://hackerone.com/reports/1145454	Exploit Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210917-0001/	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html	Mailing List Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:ruby-lang:ruby::::::::
	cpe:2.3:a:ruby-lang:ruby::::::::
	cpe:2.3:a:ruby-lang:ruby::::::::

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*

Information

Published : 2021-07-13 06:15

Updated : 2022-07-12 10:42

NVD link : CVE-2021-31810

Mitre link : CVE-2021-31810

JSON object : View

CWE

NVD-CWE-Other

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Products Affected

debian

debian_linux

oracle

jd_edwards_enterpriseone_tools

ruby-lang

ruby

fedoraproject

fedora

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