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Gentoo Linux Security Advisory GLSA 201001-09 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Ruby: Terminal Control Character Injection |
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Date: January 14, 2010 |
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Bugs: #300468 |
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ID: 201001-09 |
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Synopsis |
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======== |
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|
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An input sanitation flaw in the WEBrick HTTP server included in Ruby |
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might allow remote attackers to inject arbitrary control characters |
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into terminal sessions. |
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Background |
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========== |
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|
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Ruby is an interpreted scripting language for quick and easy |
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object-oriented programming. It comes bundled with a HTTP server |
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("WEBrick"). |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 dev-lang/ruby < 1.8.7_p249 >= 1.8.7_p249 |
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*>= 1.8.6_p388 |
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|
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Description |
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=========== |
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|
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Giovanni Pellerano, Alessandro Tanasi and Francesco Ongaro reported |
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that WEBrick does not filter terminal control characters, for instance |
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when handling HTTP logs. |
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Impact |
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====== |
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|
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A remote attacker could send a specially crafted HTTP request to a |
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WEBrick server to inject arbitrary terminal control characters, |
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possibly resulting in the execution of arbitrary commands, data loss, |
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or other unspecified impact. This could also be used to facilitate |
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other attacks. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All Ruby 1.8.7 users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-lang/ruby-1.8.7_p249" |
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All Ruby 1.8.6 users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-lang/ruby-1.8.6_p388" |
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|
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References |
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========== |
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[ 1 ] CVE-2009-4492 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-4492 |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-201001-09.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2010 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/2.5 |
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