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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+<glsa id="201507-15">
+ <title>OpenSSL: Alternate chains certificate forgery</title>
+ <synopsis>Certain checks on untrusted certificates can be bypassed.</synopsis>
+ <product type="ebuild">openssl</product>
+ <announced>2015-07-10</announced>
+ <revised count="3">2016-02-26</revised>
+ <bug>554172</bug>
+ <access>remote</access>
+ <affected>
+ <package name="dev-libs/openssl" auto="yes" arch="*">
+ <unaffected range="ge">1.0.1p</unaffected>
+ <unaffected range="rge">0.9.8z_p6</unaffected>
+ <unaffected range="rge">0.9.8z_p7</unaffected>
+ <unaffected range="rge">0.9.8z_p8</unaffected>
+ <unaffected range="rge">0.9.8z_p9</unaffected>
+ <unaffected range="rge">0.9.8z_p10</unaffected>
+ <unaffected range="rge">0.9.8z_p11</unaffected>
+ <unaffected range="rge">0.9.8z_p12</unaffected>
+ <unaffected range="rge">0.9.8z_p13</unaffected>
+ <unaffected range="rge">0.9.8z_p14</unaffected>
+ <unaffected range="rge">0.9.8z_p15</unaffected>
+ <vulnerable range="lt">1.0.1p</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer
+ (SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general
+ purpose cryptography library.
+ </p>
+ </background>
+ <description>
+ <p>During certificate verification, OpenSSL attempts to find an alternative
+ certificate chain if the first attempt to build such a chain fails.
+ </p>
+ </description>
+ <impact type="normal">
+ <p>A remote attacker could cause certain checks on untrusted
+ certificates to be bypassed, such as the CA flag, enabling them to use a
+ valid leaf certificate to act as a CA and “issue” an invalid
+ certificate.
+ </p>
+ </impact>
+ <workaround>
+ <p>There is no known workaround at this time.</p>
+ </workaround>
+ <resolution>
+ <p>All OpenSSL users should upgrade to the latest version:</p>
+
+ <code>
+ # emerge --sync
+ # emerge --ask --oneshot --verbose "&gt;=dev-libs/openssl-1.0.1p"
+ </code>
+
+ </resolution>
+ <references>
+ <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-1793">CVE-2015-1793</uri>
+ </references>
+ <metadata tag="requester" timestamp="2015-07-08T09:20:30Z">
+ keytoaster
+ </metadata>
+ <metadata tag="submitter" timestamp="2016-02-26T14:46:50Z">
+ keytoaster
+ </metadata>
+</glsa>