70957 : Ruby Exception#to_s Method Safe Level Security Bypass
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
10	1330	about 2 years ago	26 days ago	9 times	100%

Timeline

Disclosure Date
2011-02-18

Description

Ruby contains a flaw related to the safe-level feature. The issue is triggered when a context-dependent attacker exploits a flaw within the exception '#to_s' handling. This may allow an attacker to bypass safe-level protection and modify strings via the 'Exception#to_s' method.

Classification

Location: Context Dependent
Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Upgrade
Exploit: Exploit Unknown
Disclosure: Vendor Verified

Solution

Upgrade to version 1.8.7-334 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Yukihiro Matsumoto	Ruby	1.8.6
		1.8.6-420
		1.8.7
		1.8.7-330
		1.8.8dev

References

CVE ID: 2011-1005 (see also: NVD) 2012-4464 (see also: NVD) 2012-4466 (see also: NVD) 2012-4481 (see also: NVD)
Secunia Advisory ID: 43420 43573 44766 44767 45096 45109 45110 48175 50730 50944 51723 52556
Bugtraq ID: 46458 55813
VUPEN Advisory: ADV-2011-0539
Mail List Post: http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
http://seclists.org/bugtraq/2011/May/161
Vendor Specific News/Changelog Entry: http://lists.fedoraproject.org/pipermail/package-announce/2011-March/054422.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/054436.html
http://support.apple.com/kb/HT5281
http://www.ruby-lang.org/en/news/2011/02/18/exception-methods-can-bypass-safe/
http://www.ubuntu.com/usn/usn-1377-1
http://www.ubuntu.com/usn/usn-1583-1/
http://www.ubuntu.com/usn/usn-1603-1/
https://bugzilla.redhat.com/show_bug.cgi?id=678920
Other Advisory URL: http://www.mandriva.com/security/advisories?name=MDVSA-2011:097
http://www.mandriva.com/security/advisories?name=MDVSA-2011:098
http://www.openwall.com/lists/oss-security/2011/02/21/2
http://www.openwall.com/lists/oss-security/2011/02/21/5
Vendor Specific Advisory URL: https://hermes.opensuse.org/messages/8627547
https://hermes.opensuse.org/messages/8628432
RedHat RHSA: RHSA-2011:0908 RHSA-2011:0909 RHSA-2011:0910 RHSA-2013:0129 RHSA-2013:0612

Credit

Not Available

CVSSv2 Score

CVSSv2 Base Score = 4.3
Source: nvd.nist.gov | Generated: 2013-05-03 | Disagree? | There are 4 more: View All

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