CVE-2011-1004

The FileUtils.remove_entry_secure method in Ruby 1.8.6 through 1.8.6-420, 1.8.7 through 1.8.7-330, 1.8.8dev, 1.9.1 through 1.9.1-430, 1.9.2 through 1.9.2-136, and 1.9.3dev allows local users to delete arbitrary files via a symlink attack.

Published: 2011-03-02 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-1004 is rated Low Risk (36.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.39%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-1004

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.04% 0.39% +0.34%
2 2025-12-28 0.05% 0.04% -0.01%
3 2025-12-27 — 0.05% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-1004

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.3 2.0 MEDIUM
AV:L/AC:M/Au:N/C:N/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.4 9.2 [email protected]

Weakness enumeration for CVE-2011-1004

OS Trackers for CVE-2011-1004

vendor priority summary link
gentoo normal CVE-2011-1004: 1 GLSA(s) (201412-27), 1 atom(s) (dev-lang/ruby); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-1004
redhat medium — https://access.redhat.com/security/cve/CVE-2011-1004
ubuntu low CVE-2011-1004 low priority: Ubuntu including 3 source packages (ruby1.8, ruby1.9, ruby1.9.1), 36 status rows across 12 suites (dapper, hardy, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, upstream): ignored 11, not-affected 10, DNE 9, released 5, needs-triage 1. https://ubuntu.com/security/CVE-2011-1004

Affected software / configurations for CVE-2011-1004

Vendor Product Version Raw CPE
ruby-lang ruby 1.8.6 cpe:2.3:a:ruby-lang:ruby:1.8.6:*:*:*:*:*:*:*
ruby-lang ruby 1.8.7 cpe:2.3:a:ruby-lang:ruby:1.8.7:*:*:*:*:*:*:*
ruby-lang ruby 1.8.8 cpe:2.3:a:ruby-lang:ruby:1.8.8:dev:*:*:*:*:*:*
ruby-lang ruby 1.9.1 cpe:2.3:a:ruby-lang:ruby:1.9.1:*:*:*:*:*:*:*
ruby-lang ruby 1.9.2 cpe:2.3:a:ruby-lang:ruby:1.9.2:*:*:*:*:*:*:*
ruby-lang ruby 1.9.3 cpe:2.3:a:ruby-lang:ruby:1.9.3:dev:*:*:*:*:*:*

References for CVE-2011-1004

URL Tags
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/054422.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/054436.html
http://osvdb.org/70958
http://secunia.com/advisories/43434 Vendor Advisory
http://secunia.com/advisories/43573
http://support.apple.com/kb/HT5281
http://www.mandriva.com/security/advisories?name=MDVSA-2011:097
http://www.openwall.com/lists/oss-security/2011/02/21/2 Patch
http://www.openwall.com/lists/oss-security/2011/02/21/5 Patch
http://www.redhat.com/support/errata/RHSA-2011-0909.html
http://www.redhat.com/support/errata/RHSA-2011-0910.html
http://www.ruby-lang.org/en/news/2011/02/18/fileutils-is-vulnerable-to-symlink-race-attacks/ Patch Vendor Advisory
http://www.securityfocus.com/bid/46460
http://www.vupen.com/english/advisories/2011/0539
https://bugzilla.redhat.com/show_bug.cgi?id=678913 Patch
cvelogic Threat Intelligence