47470 : Ruby Safe Level Multiple Function Restriction Bypass
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Timeline

Disclosure Date
2008-08-08

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2008-3655" target="_blank">CVE</a>)</em> : Ruby 1.8.5 and earlier, 1.8.6 through 1.8.6-p286, 1.8.7 through 1.8.7-p71, and 1.9 through r18423 does not properly restrict access to critical variables and methods at various safe levels, which allows context-dependent attackers to bypass intended access restrictions via (1) untrace_var, (2) $PROGRAM_NAME, and (3) syslog at safe level 4, and (4) insecure methods at safe levels 1 through 3.

Classification

Disclosure: Vendor Verified

Solution

Upgrade to version 1.8.6-p287, 1.8.7-p72 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Unknown or Incomplete

References

CVE ID: 2008-3655 (see also: NVD)
Secunia Advisory ID: 31430 31697 32165 32219 32255 32256 32351 32371 32372 33178 35074
Related OSVDB ID: 47469 47471 47472
Vendor Specific News/Changelog Entry: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494401
http://www.gentoo.org/security/en/glsa/glsa-200812-17.xml
RedHat RHSA: http://rhn.redhat.com/errata/RHSA-2008-0895.html
http://rhn.redhat.com/errata/RHSA-2008-0896.html
https://rhn.redhat.com/errata/RHSA-2008-0897.html
Vendor Specific Advisory URL: http://support.apple.com/kb/HT1222
http://www.ruby-lang.org/en/news/2008/08/08/multiple-vulnerabilities-in-ruby/
http://www.us.debian.org/security/2008/dsa-1651
http://www.us.debian.org/security/2008/dsa-1652
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.html
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html
Other Advisory URL: http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0264
Mail List Post: https://lists.ubuntu.com/archives/ubuntu-security-announce/2008-October/000759.html

Tools & Filters

	38743 38744
	5023

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2008-08-13 | Disagree?

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