| <?xml version="1.0" encoding="UTF-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| <glsa id="201408-14"> |
| <title>stunnel: Information disclosure</title> |
| <synopsis>A vulnerability in stunnel might allow remote attackers to gain |
| access to private key information. |
| </synopsis> |
| <product type="ebuild">stunnel</product> |
| <announced>August 29, 2014</announced> |
| <revised>August 29, 2014: 1</revised> |
| <bug>503506</bug> |
| <access>remote</access> |
| <affected> |
| <package name="net-misc/stunnel" auto="yes" arch="*"> |
| <unaffected range="ge">5.02</unaffected> |
| <vulnerable range="lt">5.02</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p>The stunnel program is designed to work as an SSL encryption wrapper |
| between a client and a local or remote server. |
| </p> |
| </background> |
| <description> |
| <p>stunnel does not properly update the state of the pseudo-random |
| generator after fork-threading which causes subsequent children with the |
| same process ID to use the same entropy pool. ECDSA and DSA keys, when |
| not used in deterministic mode (RFC6979), rely on random data for its k |
| parameter to not leak private key information. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p>A remote attacker may gain access to private key information from ECDSA |
| or DSA keys. |
| </p> |
| </impact> |
| <workaround> |
| <p>There is no known workaround at this time.</p> |
| </workaround> |
| <resolution> |
| <p>All stunnel users should upgrade to the latest version:</p> |
| |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=net-misc/stunnel-5.02" |
| </code> |
| |
| </resolution> |
| <references> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0016">CVE-2014-0016</uri> |
| </references> |
| <metadata tag="requester" timestamp="Sun, 06 Jul 2014 22:44:37 +0000"> |
| BlueKnight |
| </metadata> |
| <metadata tag="submitter" timestamp="Fri, 29 Aug 2014 18:54:29 +0000">K_F</metadata> |
| </glsa> |