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CVE-2015-1855

Status Candidate

Overview

verify_certificate_identity in the OpenSSL extension in Ruby before 2.0.0 patchlevel 645, 2.1.x before 2.1.6, and 2.2.x before 2.2.2 does not properly validate hostnames, which allows remote attackers to spoof servers via vectors related to (1) multiple wildcards, (1) wildcards in IDNA names, (3) case sensitivity, and (4) non-ASCII characters.

Related Files

Ubuntu Security Notice USN-3365-1
Posted Jul 25, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3365-1 - It was discovered that Ruby DL::dlopen incorrectly handled opening libraries. An attacker could possibly use this issue to open libraries with tainted names. This issue only applied to Ubuntu 14.04 LTS. Tony Arcieri, Jeffrey Walton, and Steffan Ullrich discovered that the Ruby OpenSSL extension incorrectly handled hostname wildcard matching. This issue only applied to Ubuntu 14.04 LTS. Christian Hofstaedtler discovered that Ruby Fiddle::Handle incorrectly handled certain crafted strings. An attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, ruby
systems | linux, ubuntu
advisories | CVE-2009-5147, CVE-2015-1855, CVE-2015-7551, CVE-2015-9096, CVE-2016-2337, CVE-2016-2339, CVE-2016-7798
SHA-256 | d9c893a22d5c169a8dba5385ae2f48c95bb57c3652df1066df59f1b32a5c6be2
Apple Security Advisory 2015-09-30-03
Posted Oct 1, 2015
Authored by Apple | Site apple.com

Apple Security Advisory 2015-09-30-03 - OS X El Capitan 10.11 is now available and addresses close to 100 vulnerabilities that may exist in prior releases.

tags | advisory, vulnerability
systems | apple, osx
advisories | CVE-2013-3951, CVE-2014-2532, CVE-2014-3618, CVE-2014-6277, CVE-2014-7186, CVE-2014-7187, CVE-2014-8080, CVE-2014-8090, CVE-2014-8146, CVE-2014-8147, CVE-2014-8611, CVE-2014-9425, CVE-2014-9427, CVE-2014-9652, CVE-2014-9705, CVE-2014-9709, CVE-2015-0231, CVE-2015-0232, CVE-2015-0235, CVE-2015-0273, CVE-2015-0286, CVE-2015-0287, CVE-2015-1351, CVE-2015-1352, CVE-2015-1855, CVE-2015-2301, CVE-2015-2305, CVE-2015-2331
SHA-256 | 7a0709c784a5d4fb9ea404af89915bb4719339d731eebc17ca1e750e0b02747c
Mandriva Linux Security Advisory 2015-224
Posted May 4, 2015
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2015-224 - Ruby OpenSSL hostname matching implementation violates RFC 6125. The ruby packages for MBS2 has been updated to version 2.0.0-p645, which fixes this issue.

tags | advisory, ruby
systems | linux, mandriva
advisories | CVE-2015-1855
SHA-256 | 8f1eaae0d6b6451ce731b695400559fec4bcb4584c8945815f9e08b9ac28359c
Debian Security Advisory 3247-1
Posted May 4, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3247-1 - It was discovered that the Ruby OpenSSL extension, part of the interpreter for the Ruby language, did not properly implement hostname matching, in violation of RFC 6125. This could allow remote attackers to perform a man-in-the-middle attack via crafted SSL certificates.

tags | advisory, remote, ruby
systems | linux, debian
advisories | CVE-2015-1855
SHA-256 | 29cf3ef489cfdd5de99dc7f08054b71b5c3941f595f6df2628145ca521b30bd8
Debian Security Advisory 3246-1
Posted May 4, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3246-1 - It was discovered that the Ruby OpenSSL extension, part of the interpreter for the Ruby language, did not properly implement hostname matching, in violation of RFC 6125. This could allow remote attackers to perform a man-in-the-middle attack via crafted SSL certificates.

tags | advisory, remote, ruby
systems | linux, debian
advisories | CVE-2015-1855
SHA-256 | 67b79659a830da060b29a81b3185782a4dca46b2a224294c3dbad70e33edd1e5
Debian Security Advisory 3245-1
Posted May 4, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3245-1 - It was discovered that the Ruby OpenSSL extension, part of the interpreter for the Ruby language, did not properly implement hostname matching, in violation of RFC 6125. This could allow remote attackers to perform a man-in-the-middle attack via crafted SSL certificates.

tags | advisory, remote, ruby
systems | linux, debian
advisories | CVE-2015-1855
SHA-256 | f36e3631ebe9c1655e213027494dd4f36e687941e8cc8dd948315e8c65789061
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