CVE-2011-1004 - Improper Link Resolution Before File Access ('Link Following')

Severity

63%

Complexity

34%

Confidentiality

153%

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.

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.

CVSS 2.0 Base Score 6.3. CVSS Attack Vector: local. CVSS Attack Complexity: medium. CVSS Vector: (AV:L/AC:M/Au:N/C:N/I:C/A:C).

Overview

First reported 13 years ago

2011-03-02 20:00:00

Last updated 12 years ago

2012-05-12 03:36:00

Affected Software

Ruby-lang Ruby 1.8.6

1.8.6

ruby-lang Ruby 1.8.7

1.8.7

ruby-lang Ruby 1.9.1

1.9.1

ruby-lang Ruby 1.9.2

1.9.2

References

APPLE-SA-2012-05-09-1

FEDORA-2011-1876

FEDORA-2011-1913

70958

43434

Vendor Advisory

43573

http://support.apple.com/kb/HT5281

MDVSA-2011:097

[oss-security] 20110221 CVE request: ruby: FileUtils is vulnerable to symlink race attacks + Exception methods can bypass $SAFE

Patch

[oss-security] 20110221 Re: CVE request: ruby: FileUtils is vulnerable to symlink race attacks + Exception methods can bypass $SAFE

Patch

RHSA-2011:0909

RHSA-2011:0910

http://www.ruby-lang.org/en/news/2011/02/18/fileutils-is-vulnerable-to-symlink-race-attacks/

Patch, Vendor Advisory

46460

ADV-2011-0539

https://bugzilla.redhat.com/show_bug.cgi?id=678913

Patch

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