NVD Vulnerability Detail

CVE-2021-31810

Summary	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).
Publication Date	July 13, 2021, 10:15 p.m.
Registration Date	July 14, 2021, 10 a.m.
Last Update	Nov. 21, 2024, 3:06 p.m.

Affected software configurations

Configuration2		or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:9.0:::::::*

Configuration3		or higher	or less	more than	less than
cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools::::::::					9.2.6.1

Related information, measures and tools

No	URL	タグ
1	https://hackerone.com/reports/1145454	Exploit Patch Third Party Advisory
2	https://hackerone.com/reports/1145454	Exploit Patch Third Party Advisory
3	https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html	Mailing List Third Party Advisory
4	https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html	Mailing List Third Party Advisory
5	https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html
6	https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html
7	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/
8	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/
9	https://security.gentoo.org/glsa/202401-27
10	https://security.gentoo.org/glsa/202401-27
11	https://security.netapp.com/advisory/ntap-20210917-0001/	Third Party Advisory
12	https://security.netapp.com/advisory/ntap-20210917-0001/	Third Party Advisory
13	https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory
14	https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory
15	https://www.ruby-lang.org/en/news/2021/07/07/trusting-pasv-responses-in-net-ftp/	Vendor Advisory
16	https://www.ruby-lang.org/en/news/2021/07/07/trusting-pasv-responses-in-net-ftp/	Vendor Advisory

Common Vulnerabilities List

JVN Vulnerability Information

Ruby における脆弱性

Title	Ruby における脆弱性
Summary	Ruby には、不特定の脆弱性が存在します。
Possible impacts	情報を取得される可能性があります。
Solution	ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date	July 7, 2021, midnight
Registration Date	Sept. 2, 2022, 6:11 p.m.
Last Update	Sept. 2, 2022, 6:11 p.m.

Affected System

オラクル

JD Edwards EnterpriseOne Tools

Ruby-lang.org

Ruby 2.6.7 まで

Ruby 2.7.3 までの 2.7.x

Ruby 3.0.1 までの 3.x

Debian

Debian GNU/Linux

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2021-31810	https://www.cve.org/CVERecord?id=CVE-2021-31810
National Vulnerability Database (NVD)
2	CVE-2021-31810	https://nvd.nist.gov/vuln/detail/CVE-2021-31810
Ruby
3	CVE-2021-31810: Trusting FTP PASV responses vulnerability in Net::FTP	https://www.ruby-lang.org/en/news/2021/07/07/trusting-pasv-responses-in-net-ftp/

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-Other	https://www.ipa.go.jp/security/vuln/CWE.html#CWEOther

ベンダー情報

No	Name	URL
Debian
1	[SECURITY] [DLA 2780-1] ruby2.3 security update	https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html
Oracle Critical Patch Update
2	Oracle Critical Patch Update Advisory - April 2022	https://www.oracle.com/security-alerts/cpuapr2022.html

その他

No	Name	URL
関連文書
1	1145454 (lib/net/ftp.rb:trusting PASV responses allow client abuse)	https://hackerone.com/reports/1145454

Change Log

No	Changed Details	Date of change
1	[2022年07月05日] 掲載	July 5, 2022, 12:03 p.m.