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🟠 gem-audit v2120 - #CVE-2021-31810 (Medium) -DC-Nov2026-4094 https://dailycve.com/gem-audit-v2120-cve-2021-31810-medium-dc-nov2026-4094/
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CVE-2021-31810(debian / debian_linux)
LOWCVSS 5.8 · MEDIUMSignal is active with 1 mentions in latest observed window
Immediate actions
- Track advisory updates for patch or workaround availability
Recommended action window: Monitor and triage in normal cycle
NVD 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).
1.0/ 10 priority
Sources & remediation
Patch / fix
Exploit / PoC references
Vendor / third-party advisories
- https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html
- https://security.netapp.com/advisory/ntap-20210917-0001/
- https://www.ruby-lang.org/en/news/2021/07/07/trusting-pasv-responses-in-net-ftp/
- https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html
- https://security.netapp.com/advisory/ntap-20210917-0001/
Other references
- https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/
- https://security.gentoo.org/glsa/202401-27
- https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
AVAILABLE
Momentum
NONE
Are you affected?
If you run products in this scope, you should treat this CVE as relevant to your environment.
- debian_linux
- fedora
- jd_edwards_enterpriseone_tools
- ruby
Threat summary
- 1 mentions across 1 observed day
What's happening
- 1 total mentions across 1 day
Affected systems
Products
debian_linuxfedorajd_edwards_enterpriseone_toolsruby
2 versions affected across 4 products
Deep dive
Activity timeline1 mentions / 1d
Referenced assets1 URL
Full discourse1 post
CPE platform detail4 entries
4 of 4 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | debian | debian_linux | 9.0 | - | - |
| OS | fedoraproject | fedora | 34 | - | - |
| App | oracle | jd_edwards_enterpriseone_tools | - | - | - |
| App | ruby-lang | ruby | - | - | - |