CVE-2013-2512Public exploitNetwork attack vector

Remote command execution via unescaped listing arguments

Published Jan 26, 2021 · Updated Aug 6, 2024

OS command injection in the ftpd gem 0.2.1 and earlier allows remote attackers to execute arbitrary commands via FTP LIST or NLST arguments. The DiskFileSystem::Ls#ls method joins the option and filename into a shell command and executes it without escaping shell metacharacters. Reachability requires an FTP session and an existing current-directory path whose name carries the injected shell syntax; commands run with server-process privileges.

CVSS severity9.8
Critical
EPSS probability3.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in the ftpd gem 0.2.1 and earlier allows remote attackers to execute arbitrary commands via FTP LIST or NLST arguments. The DiskFileSystem::Ls#ls method joins the option and filename into a shell command and executes it without escaping shell metacharacters. Reachability requires an FTP session and an existing current-directory path whose name carries the injected shell syntax; commands run with server-process privileges.

The record

CVE
CVE-2013-2512
Published
Jan 26, 2021
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 26, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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