CVE Vulnerability

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).

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.8 /10

CVSS v3.0 : MEDIUM

V3 Legend

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

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
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
Configurations

Configuration 1

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*
Information

Published : 2021-07-13 01:15

Updated : 2022-07-12 05:42

NVD link : CVE-2021-31810

Mitre link : CVE-2021-31810

Products Affected

Ruby

Ruby-lang

CWE
NVD-CWE-Other