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CVE-2011-1005

Status Candidate

Overview

The safe-level feature in Ruby 1.8.6 through 1.8.6-420, 1.8.7 through 1.8.7-330, and 1.8.8dev allows context-dependent attackers to modify strings via the Exception#to_s method, as demonstrated by changing an intended pathname.

Related Files

Gentoo Linux Security Advisory 201412-27
Posted Dec 15, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201412-27 - Multiple vulnerabilities have been found in Ruby, allowing context-dependent attackers to cause a Denial of Service condition. Versions less than 2.0.0_p598 are affected.

tags | advisory, denial of service, vulnerability, ruby
systems | linux, gentoo
advisories | CVE-2011-0188, CVE-2011-1004, CVE-2011-1005, CVE-2011-4815, CVE-2012-4481, CVE-2012-5371, CVE-2013-0269, CVE-2013-1821, CVE-2013-4164, CVE-2014-8080, CVE-2014-8090
MD5 | 813b38bb3f2ea9ccac81d5704af95024
Ubuntu Security Notice USN-1583-1
Posted Sep 26, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1583-1 - It was discovered that Ruby incorrectly allowed untainted strings to be modified in protective safe levels. An attacker could use this flaw to bypass intended access restrictions. John Firebaugh discovered that the RubyGems remote gem fetcher did not properly verify SSL certificates. A remote attacker could exploit this to perform a man in the middle attack to alter gem files being downloaded for installation. Various other issues were also addressed.

tags | advisory, remote, ruby
systems | linux, ubuntu
advisories | CVE-2011-1005, CVE-2012-2126, CVE-2012-2125, CVE-2011-1005, CVE-2012-2125, CVE-2012-2126
MD5 | 6b766756fec0cb16ba8c38d13038e459
Apple Security Advisory 2012-05-09-1
Posted May 10, 2012
Authored by Apple | Site apple.com

Apple Security Advisory 2012-05-09-1 - OS X Lion v10.7.4 and Security Update 2012-002 is now available and addresses multiple security issues. An issue existed in the handling of network account logins. The login process recorded sensitive information in the system log, where other users of the system could read it. A temporary file race condition issue existed in blued's initialization routine. There are known attacks on the confidentiality of SSL 3.0 and TLS 1.0 when a cipher suite uses a block cipher in CBC mode. curl disabled the 'empty fragment' countermeasure which prevented these attacks. This issue is addressed by enabling empty fragments. A data injection issue existed in curl's handling of URLs. This issue is addressed through improved validation of URLs. This issue does not affect systems prior to OS X Lion. Various other vulnerabilities have been addressed.

tags | advisory, vulnerability
systems | apple, osx
advisories | CVE-2011-0241, CVE-2011-1004, CVE-2011-1005, CVE-2011-1167, CVE-2011-1777, CVE-2011-1778, CVE-2011-1944, CVE-2011-2692, CVE-2011-2821, CVE-2011-2834, CVE-2011-2895, CVE-2011-3212, CVE-2011-3328, CVE-2011-3389, CVE-2011-3919, CVE-2011-4566, CVE-2011-4815, CVE-2011-4885, CVE-2012-0036, CVE-2012-0642, CVE-2012-0649, CVE-2012-0651, CVE-2012-0652, CVE-2012-0654, CVE-2012-0655, CVE-2012-0656, CVE-2012-0657, CVE-2012-0658
MD5 | 9614673327dc336467f1b3577177a46e
Ubuntu Security Notice USN-1377-1
Posted Feb 28, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1377-1 - Drew Yao discovered that the WEBrick HTTP server was vulnerable to cross-site scripting attacks when displaying error pages. A remote attacker could use this flaw to run arbitrary web script. Drew Yao discovered that Ruby's BigDecimal module did not properly allocate memory on 64-bit platforms. An attacker could use this flaw to cause a denial of service or possibly execute arbitrary code with user privileges. Various other issues were also addressed.

tags | advisory, remote, web, denial of service, arbitrary, xss, ruby
systems | linux, ubuntu
advisories | CVE-2010-0541, CVE-2011-0188, CVE-2011-1004, CVE-2011-1005, CVE-2011-2686, CVE-2011-2705, CVE-2011-4815, CVE-2010-0541, CVE-2011-0188, CVE-2011-1004, CVE-2011-1005, CVE-2011-2686, CVE-2011-2705, CVE-2011-4815
MD5 | 96e246b81f447daeed7e88c291d1bc26
Red Hat Security Advisory 2011-0910-01
Posted Jun 28, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-0910-01 - Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack. Various other issues were also addressed.

tags | advisory, arbitrary, local, ruby
systems | linux, redhat
advisories | CVE-2011-0188, CVE-2011-1004, CVE-2011-1005
MD5 | 284cb759f0b3fbe4cafb951d0eadef6d
Red Hat Security Advisory 2011-0909-01
Posted Jun 28, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-0909-01 - Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack. Various other issues were also addressed.

tags | advisory, arbitrary, local, ruby
systems | linux, redhat
advisories | CVE-2009-4492, CVE-2010-0541, CVE-2011-0188, CVE-2011-1004, CVE-2011-1005
MD5 | 067959c7597a5e9df47ef8d0dd1e3bc5
Red Hat Security Advisory 2011-0908-01
Posted Jun 28, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-0908-01 - Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. It was found that WEBrick did not filter terminal escape sequences from its log files. A remote attacker could use specially-crafted HTTP requests to inject terminal escape sequences into the WEBrick log files. If a victim viewed the log files with a terminal emulator, it could result in control characters being executed with the privileges of that user. Various other issues were also addressed.

tags | advisory, remote, web, arbitrary, ruby
systems | linux, redhat
advisories | CVE-2009-4492, CVE-2010-0541, CVE-2011-0188, CVE-2011-1005
MD5 | df186f6785dcd15afd8d2ed50e603201
Mandriva Linux Security Advisory 2011-098
Posted May 23, 2011
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2011-098 - Cross-site scripting vulnerability in the WEBrick HTTP server in Ruby allows remote attackers to inject arbitrary web script or HTML via a crafted URI that triggers a UTF-7 error page. The safe-level feature in Ruby allows context-dependent attackers to modify strings via the Exception#to_s method, as demonstrated by changing an intended pathname. The VpMemAlloc function in bigdecimal.c in the BigDecimal class in Ruby does not properly allocate memory, which allows context-dependent attackers to execute arbitrary code or cause a denial of service via vectors involving creation of a large BigDecimal value within a 64-bit process, related to an integer truncation issue. The updated packages have been patched to correct this issue.

tags | advisory, remote, web, denial of service, arbitrary, xss, ruby
systems | linux, mandriva
advisories | CVE-2010-0541, CVE-2011-1005, CVE-2011-0188
MD5 | bf9c5c468d4c6b83ad35c7574a0a9f91
Mandriva Linux Security Advisory 2011-097
Posted May 23, 2011
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2011-097 - Cross-site scripting vulnerability in the WEBrick HTTP server in Ruby allows remote attackers to inject arbitrary web script or HTML via a crafted URI that triggers a UTF-7 error page. The FileUtils.remove_entry_secure method in Ruby allows local users to delete arbitrary files via a symlink attack. The safe-level feature in Ruby allows context-dependent attackers to modify strings via the Exception#to_s method, as demonstrated by changing an intended pathname. The VpMemAlloc function in bigdecimal.c in the BigDecimal class in Ruby does not properly allocate memory, which allows context-dependent attackers to execute arbitrary code or cause a denial of service via vectors involving creation of a large BigDecimal value within a 64-bit process, related to an integer truncation issue.

tags | advisory, remote, web, denial of service, arbitrary, local, xss, ruby
systems | linux, mandriva
advisories | CVE-2010-0541, CVE-2011-1004, CVE-2011-1005, CVE-2011-0188
MD5 | 4d40ec180f11e6f686d6e8c226b68118
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