glsa-200610-06.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200610-06">
  <title>Mozilla Network Security Service (NSS): RSA signature forgery</title>
  <synopsis>
    NSS fails to properly validate PKCS #1 v1.5 signatures.
  </synopsis>
  <product type="ebuild">nss</product>
  <announced>2006-10-17</announced>
  <revised>2006-10-17: 01</revised>
  <bug>148283</bug>
  <access>remote</access>
  <affected>
    <package name="dev-libs/nss" auto="yes" arch="*">
      <unaffected range="ge">3.11.3</unaffected>
      <vulnerable range="lt">3.11.3</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    The Mozilla Network Security Service is a library implementing security
    features like SSL v.2/v.3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12,
    S/MIME and X.509 certificates.
    </p>
  </background>
  <description>
    <p>
    Daniel Bleichenbacher discovered that it might be possible to forge
    signatures signed by RSA keys with the exponent of 3. This affects a
    number of RSA signature implementations, including Mozilla's NSS.
    </p>
  </description>
  <impact type="normal">
    <p>
    Since several Certificate Authorities (CAs) are using an exponent of 3
    it might be possible for an attacker to create a key with a false CA
    signature. This impacts any software using the NSS library, like the
    Mozilla products Firefox, Thunderbird and Seamonkey.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All NSS users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=dev-libs/nss-3.11.3"</code>
    <p>
    Note: As usual after updating a library, you should run
    'revdep-rebuild' (from the app-portage/gentoolkit package) to ensure
    that all applications linked to it are properly rebuilt.
    </p>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4339">CVE-2006-4339</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4340">CVE-2006-4340</uri>
  </references>
  <metadata tag="requester" timestamp="2006-09-25T12:57:17Z">
    frilled
  </metadata>
  <metadata tag="bugReady" timestamp="2006-10-03T18:27:05Z">
    vorlon078
  </metadata>
  <metadata tag="submitter" timestamp="2006-10-08T19:45:16Z">
    frilled
  </metadata>
</glsa>